SE426128B - Metod vid overforing av datameddelanden mellan tva stationer, samt overforingsanleggning for utforande av metoden - Google Patents

Metod vid overforing av datameddelanden mellan tva stationer, samt overforingsanleggning for utforande av metoden

Info

Publication number
SE426128B
SE426128B SE8102268A SE8102268A SE426128B SE 426128 B SE426128 B SE 426128B SE 8102268 A SE8102268 A SE 8102268A SE 8102268 A SE8102268 A SE 8102268A SE 426128 B SE426128 B SE 426128B
Authority
SE
Sweden
Prior art keywords
station
function
encryption
message
numerical value
Prior art date
Application number
SE8102268A
Other languages
English (en)
Swedish (sv)
Other versions
SE8102268L (sv
Inventor
P Oman
T I Aaro
T C Rustan
R J Blom
R Rochheimer
V A Fak
B I Ingemarsson
Original Assignee
Philips Svenska Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20343561&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE426128(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Philips Svenska Ab filed Critical Philips Svenska Ab
Priority to SE8102268A priority Critical patent/SE426128B/sv
Priority to CA000400150A priority patent/CA1191916A/en
Priority to US06/365,711 priority patent/US4720859A/en
Priority to EP82200425A priority patent/EP0064779B1/de
Priority to DE8282200425T priority patent/DE3274043D1/de
Publication of SE8102268L publication Critical patent/SE8102268L/xx
Publication of SE426128B publication Critical patent/SE426128B/sv

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/10—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1008—Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/34—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
    • G06Q20/341—Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/36—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes
    • G06Q20/367—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes involving electronic purses or money safes
    • G06Q20/3674—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes involving electronic purses or money safes involving authentication
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/388—Payment protocols; Details thereof using mutual authentication without cards, e.g. challenge-response
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G06Q20/409—Device specific authentication in transaction processing
    • G06Q20/4097—Device specific authentication in transaction processing using mutual authentication between devices and transaction partners
    • G06Q20/40975—Device specific authentication in transaction processing using mutual authentication between devices and transaction partners using encryption therefor
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/10—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means together with a coded signal, e.g. in the form of personal identification information, like personal identification number [PIN] or biometric data
    • G07F7/1016—Devices or methods for securing the PIN and other transaction-data, e.g. by encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3271—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using challenge-response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/56—Financial cryptography, e.g. electronic payment or e-cash

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Finance (AREA)
  • Strategic Management (AREA)
  • General Business, Economics & Management (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Storage Device Security (AREA)
  • Small-Scale Networks (AREA)
SE8102268A 1981-04-08 1981-04-08 Metod vid overforing av datameddelanden mellan tva stationer, samt overforingsanleggning for utforande av metoden SE426128B (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8102268A SE426128B (sv) 1981-04-08 1981-04-08 Metod vid overforing av datameddelanden mellan tva stationer, samt overforingsanleggning for utforande av metoden
CA000400150A CA1191916A (en) 1981-04-08 1982-03-31 Method and system for the mutual encyphered identification between data communicating stations and stations for use with such method and system
US06/365,711 US4720859A (en) 1981-04-08 1982-04-05 Method and system for the mutual encyphered indentification between data communicating stations and stations for use with such method and system
EP82200425A EP0064779B1 (de) 1981-04-08 1982-04-07 Verfahren und System zur gegenseitigen verschlüsselten Identifizierung zwischen Datenübertragungsstationen und Stationen zur Anwendung derselben
DE8282200425T DE3274043D1 (en) 1981-04-08 1982-04-07 Method and system for the mutual encyphered identification between data communicating stations and stations for use with such method and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8102268A SE426128B (sv) 1981-04-08 1981-04-08 Metod vid overforing av datameddelanden mellan tva stationer, samt overforingsanleggning for utforande av metoden

Publications (2)

Publication Number Publication Date
SE8102268L SE8102268L (sv) 1982-10-09
SE426128B true SE426128B (sv) 1982-12-06

Family

ID=20343561

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8102268A SE426128B (sv) 1981-04-08 1981-04-08 Metod vid overforing av datameddelanden mellan tva stationer, samt overforingsanleggning for utforande av metoden

Country Status (5)

Country Link
US (1) US4720859A (de)
EP (1) EP0064779B1 (de)
CA (1) CA1191916A (de)
DE (1) DE3274043D1 (de)
SE (1) SE426128B (de)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3300170C2 (de) * 1983-01-05 1986-12-18 DATA-LÖSCH Gesellschaft für Sicherheitstechniken im Datenschutz mbH, 4420 Coesfeld Sperrwerk-Steuerungsanlage
US4536647A (en) * 1983-07-15 1985-08-20 Atalla Corporation Pocket banking terminal, method and system
FR2549989B1 (fr) * 1983-07-29 1985-09-13 Philips Ind Commerciale Systeme d'authentification entre un lecteur de carte et une carte de paiement echangeant des informations
EP0148960B1 (de) * 1983-12-21 1990-03-14 International Business Machines Corporation Sicherheit in Datenübertragungssystemen
DK152239C (da) * 1983-12-30 1988-07-04 Sp Radio As Fremgangsmaade til kryptografisk overfoering af talesignaler og kommunikationsstation til udoevelse af fremgangsmaaden
JPS60160491A (ja) * 1984-01-31 1985-08-22 Toshiba Corp Ｉｃカードとｉｃカード発行装置
US4649233A (en) * 1985-04-11 1987-03-10 International Business Machines Corporation Method for establishing user authenication with composite session keys among cryptographically communicating nodes
GB8524020D0 (en) * 1985-09-30 1985-11-06 British Telecomm Electronic funds transfer
US4799061A (en) * 1985-11-18 1989-01-17 International Business Machines Corporation Secure component authentication system
FR2601795B1 (fr) * 1986-07-17 1988-10-07 Bull Cp8 Procede pour diversifier une cle de base et pour authentifier une cle ainsi diversifiee comme ayant ete elaboree a partir d'une cle de base predeterminee, et systeme pour la mise en oeuvre
GB8619453D0 (en) * 1986-08-08 1986-09-17 British Broadcasting Corp Data encipherment
US4916738A (en) * 1986-11-05 1990-04-10 International Business Machines Corp. Remote access terminal security
EP0281057B1 (de) * 1987-03-04 1994-05-11 Siemens Nixdorf Informationssysteme Aktiengesellschaft Schaltungsanordnung zur Sicherung des Zugangs zu einem Datenverarbeitungssystem mit Hilfe einer Chipkarte
GB8819767D0 (en) * 1988-08-19 1989-07-05 Ncr Co Public key diversification method
US4910777A (en) * 1988-09-20 1990-03-20 At&T Bell Laboratories Packet switching architecture providing encryption across packets
ES2047730T3 (es) * 1989-03-08 1994-03-01 Siemens Nixdorf Inf Syst Procedimiento para la generacion de un numero aleatorio para la transmision codificada de datos, utilizando un valor de partida variable.
US5196840A (en) * 1990-11-05 1993-03-23 International Business Machines Corporation Secure communications system for remotely located computers
JP2901767B2 (ja) * 1991-02-08 1999-06-07 株式会社東芝 暗号通信システム及び携帯可能電子装置
US5202921A (en) * 1991-04-01 1993-04-13 International Business Machines Corporation Method and apparatus for authenticating users of a communication system to each other
EP0537903A2 (de) * 1991-10-02 1993-04-21 International Business Machines Corporation Verteiltes Kontrollsystem
NL9101796A (nl) * 1991-10-25 1993-05-17 Nederland Ptt Werkwijze voor het authenticeren van communicatiedeelnemers, systeem voor toepassing van de werkwijze en eerste communicatiedeelnemer en tweede communicatiedeelnemer voor toepassing in het systeem.
US5557518A (en) * 1994-04-28 1996-09-17 Citibank, N.A. Trusted agents for open electronic commerce
US5396558A (en) * 1992-09-18 1995-03-07 Nippon Telegraph And Telephone Corporation Method and apparatus for settlement of accounts by IC cards
US5267314A (en) * 1992-11-17 1993-11-30 Leon Stambler Secure transaction system and method utilized therein
GB2278518B (en) * 1993-05-14 1997-12-10 Trafford Limited Encrypted data transfer
US5768381A (en) * 1993-09-14 1998-06-16 Chantilley Corporation Limited Apparatus for key distribution in an encryption system
US5481611A (en) * 1993-12-09 1996-01-02 Gte Laboratories Incorporated Method and apparatus for entity authentication
US5491750A (en) * 1993-12-30 1996-02-13 International Business Machines Corporation Method and apparatus for three-party entity authentication and key distribution using message authentication codes
US5491749A (en) * 1993-12-30 1996-02-13 International Business Machines Corporation Method and apparatus for entity authentication and key distribution secure against off-line adversarial attacks
US5692049A (en) * 1995-02-13 1997-11-25 Eta Technologies Corporation Personal access management system
US5689564A (en) * 1995-02-13 1997-11-18 Eta Technologies Corporation Personal access management system
US5696825A (en) * 1995-02-13 1997-12-09 Eta Technologies Corporation Personal access management system
US5682428A (en) * 1995-02-13 1997-10-28 Eta Technologies Corporation Personal access management system
US5610980A (en) * 1995-02-13 1997-03-11 Eta Technologies Corporation Method and apparatus for re-initializing a processing device and a storage device
US5778068A (en) * 1995-02-13 1998-07-07 Eta Technologies Corporation Personal access management system
US5619574A (en) * 1995-02-13 1997-04-08 Eta Technologies Corporation Personal access management system
US5694472A (en) * 1995-02-13 1997-12-02 Eta Technologies Corporation Personal access management system
US5923762A (en) * 1995-12-27 1999-07-13 Pitney Bowes Inc. Method and apparatus for ensuring debiting in a postage meter prior to its printing a postal indicia
US5799290A (en) * 1995-12-27 1998-08-25 Pitney Bowes Inc. Method and apparatus for securely authorizing performance of a function in a distributed system such as a postage meter
GB9601924D0 (en) * 1996-01-31 1996-04-03 Certicom Corp Transaction verification protocol for smart cards
US5841872A (en) * 1996-07-01 1998-11-24 Allsoft Distributing Incorporated Encryption enhancement system
US6041123A (en) * 1996-07-01 2000-03-21 Allsoft Distributing Incorporated Centralized secure communications system
AU6758898A (en) 1997-03-12 1998-09-29 Visa International Secure electronic commerce employing integrated circuit cards
JP3864401B2 (ja) 1997-04-23 2006-12-27 ソニー株式会社 認証システム、電子機器、認証方法、および記録媒体
JP3951464B2 (ja) * 1998-07-28 2007-08-01 株式会社日立製作所 ディジタル信号処理装置
GB2348568A (en) * 1999-03-31 2000-10-04 Ibm Enabling conformance to legislative requirements for mobile devices
JP4177514B2 (ja) * 1999-04-28 2008-11-05 株式会社東芝 コンピュータシステムおよびコンテンツ保護方法
DE10164133A1 (de) * 2001-12-30 2003-07-17 Juergen K Lang System und Verfahren zur Wiedergabe kopier- und nutzungsgeschützter Ton- und Bildmedien
DE10164135A1 (de) * 2001-12-30 2003-07-17 Juergen K Lang System und Verfahren zur kopier- und nutzungsgeschützten Ver- und Entschlüsselung, Übertragung und Speicherung elektronischer Ton- und Bildmedien
DE10164131A1 (de) * 2001-12-30 2003-07-17 Juergen K Lang Kryptographisches Modul zur Speicherung und Wiedergabe kopier-und nutzungsgeschützter elektronischer Ton- und Bildmedien
DE10164134A1 (de) * 2001-12-30 2003-07-17 Juergen K Lang System und Verfahren zur Erstellung und Verbreitung kopier- und nutzungsgeschützter elektronischer Ton- und Bildmedien und deren Dateninhalte
DE10352071A1 (de) * 2003-11-07 2005-06-23 Daimlerchrysler Ag Verfahren zur Erkennung von unberechtigten Komponententausch
US7761591B2 (en) 2005-12-16 2010-07-20 Jean A. Graham Central work-product management system for coordinated collaboration with remote users

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193131A (en) * 1977-12-05 1980-03-11 International Business Machines Corporation Cryptographic verification of operational keys used in communication networks
US4206315A (en) * 1978-01-04 1980-06-03 International Business Machines Corporation Digital signature system and apparatus
US4408203A (en) * 1978-01-09 1983-10-04 Mastercard International, Inc. Security system for electronic funds transfer system
US4186871A (en) * 1978-03-01 1980-02-05 International Business Machines Corporation Transaction execution system with secure encryption key storage and communications
GB2047506B (en) * 1978-05-03 1982-11-24 Atalla Technovations Method and apparatus for securing data transmissions
US4288659A (en) * 1979-05-21 1981-09-08 Atalla Technovations Method and means for securing the distribution of encoding keys
US4264782A (en) * 1979-06-29 1981-04-28 International Business Machines Corporation Method and apparatus for transaction and identity verification
FR2469760A1 (fr) * 1979-11-09 1981-05-22 Cii Honeywell Bull Procede et systeme d'identification de personnes demandant l'acces a certains milieux
US4302810A (en) * 1979-12-28 1981-11-24 International Business Machines Corporation Method and apparatus for secure message transmission for use in electronic funds transfer systems
US4326098A (en) * 1980-07-02 1982-04-20 International Business Machines Corporation High security system for electronic signature verification
US4393269A (en) * 1981-01-29 1983-07-12 International Business Machines Corporation Method and apparatus incorporating a one-way sequence for transaction and identity verification
DE3123168C1 (de) * 1981-06-11 1982-11-04 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Schluesseluebertragung
US4423287A (en) * 1981-06-26 1983-12-27 Visa U.S.A., Inc. End-to-end encryption system and method of operation
US4652698A (en) * 1984-08-13 1987-03-24 Ncr Corporation Method and system for providing system security in a remote terminal environment
US4649233A (en) * 1985-04-11 1987-03-10 International Business Machines Corporation Method for establishing user authenication with composite session keys among cryptographically communicating nodes

Also Published As

Publication number Publication date
DE3274043D1 (en) 1986-12-04
EP0064779A2 (de) 1982-11-17
US4720859A (en) 1988-01-19
EP0064779A3 (en) 1984-07-25
EP0064779B1 (de) 1986-10-29
CA1191916A (en) 1985-08-13
SE8102268L (sv) 1982-10-09

Similar Documents

Publication Publication Date Title
SE426128B (sv) Metod vid overforing av datameddelanden mellan tva stationer, samt overforingsanleggning for utforande av metoden
EP0007002B1 (de) Transaktionsterminalsysteme mit Beglaubigung des potentiellen Benutzers
US4912762A (en) Management of cryptographic keys
US4259720A (en) Security system for electronic funds transfer system
Brickell et al. Trustee-based Tracing Extensions to Anonymous Cash and the Making of Anonymous Change.
US5315658A (en) Fair cryptosystems and methods of use
US4500750A (en) Cryptographic application for interbank verification
US7502467B2 (en) System and method for authentication seed distribution
US4438824A (en) Apparatus and method for cryptographic identity verification
US4408203A (en) Security system for electronic funds transfer system
US6058189A (en) Method and system for performing secure electronic monetary transactions
US5960086A (en) Unified end-to-end security methods and systems for operating on insecure networks
US5016276A (en) Common cryptokey generation system and communication system using common cryptokeys
USRE36918E (en) Fair cryptosystems and methods of use
GB2329499A (en) Controlling access to electronically provided services
US20010014156A1 (en) Common key generating method, common key generator, cryptographic communication method and cryptographic communication system
JP2862141B2 (ja) 慣用暗号を用いた識別番号ベース鍵管理装置
CN113779624A (zh) 一种基于智能合约的隐私数据分享方法
US6823070B1 (en) Method for key escrow in a communication system and apparatus therefor
US7602909B1 (en) Self-service terminal
US20010009583A1 (en) Secret key registration method, secret key register, secret key issuing method, cryptographic communication method and cryptographic communication system
Aragona et al. Several proofs of security for a tokenization algorithm
CN114629876B (zh) 一种通讯录处理方法及装置
CN108848089A (zh) 一种数据加密方法及数据传输系统
GBESOR-ZOIKU COLLEGE OF BASIC AND APPLIED SCIENCE DEPARTMENT OF COMPUTER SCIENCE

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 8102268-3

Format of ref document f/p: F

NUG Patent has lapsed

Ref document number: 8102268-3

Format of ref document f/p: F