ES394022A1 - Mejoras en aparatos telefonicos. - Google Patents

Mejoras en aparatos telefonicos.

Info

Publication number
ES394022A1
ES394022A1 ES71394022A ES394022A ES394022A1 ES 394022 A1 ES394022 A1 ES 394022A1 ES 71394022 A ES71394022 A ES 71394022A ES 394022 A ES394022 A ES 394022A ES 394022 A1 ES394022 A1 ES 394022A1
Authority
ES
Spain
Prior art keywords
call box
hands
emergency call
free emergency
emergency
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES71394022A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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
Application filed by Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES394022A1 publication Critical patent/ES394022A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/12—Manually actuated calamity alarm transmitting arrangements emergency non-personal manually actuated alarm, activators, e.g. details of alarm push buttons mounted on an infrastructure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Mobile Radio Communication Systems (AREA)
ES71394022A 1970-08-10 1971-08-09 Mejoras en aparatos telefonicos. Expired ES394022A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6227070A 1970-08-10 1970-08-10

Publications (1)

Publication Number Publication Date
ES394022A1 true ES394022A1 (es) 1974-10-01

Family

ID=22041368

Family Applications (1)

Application Number Title Priority Date Filing Date
ES71394022A Expired ES394022A1 (es) 1970-08-10 1971-08-09 Mejoras en aparatos telefonicos.

Country Status (3)

Country Link
US (1) US3707607A (es)
CA (1) CA936294A (es)
ES (1) ES394022A1 (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800089A (en) * 1972-02-24 1974-03-26 Itt Hands-free emergency telephone system
US3919496A (en) * 1974-10-25 1975-11-11 Northern Electric Co Die cast frame
US4518826A (en) * 1982-12-22 1985-05-21 Mountain Systems, Inc. Vandal-proof communication system
USD284660S (en) 1984-04-20 1986-07-15 Marvin Glass & Associates Combination telephone set
USD286531S (en) 1984-05-31 1986-11-04 Peter Lee Telephone set
USD286774S (en) 1984-10-18 1986-11-18 TeleQuest, Inc. Wall telephone
US5363436A (en) * 1989-10-02 1994-11-08 Mcmonagle Jr John J Remotely programmable, vandal-resistant voice communications unit
US5086463A (en) * 1989-10-02 1992-02-04 Vesely Kevin T Vandal-resistant communications station
USD426220S (en) * 1999-02-08 2000-06-06 Kings III of America, Inc. Handsfree emergency telephone
USD478325S1 (en) 2002-02-07 2003-08-12 Esser-Effeff Alarm Gmbh Manual call point
USD519099S1 (en) * 2004-06-09 2006-04-18 Motorola, Inc. Radio service prompter
US8073178B2 (en) * 2007-03-29 2011-12-06 Merry Electronics Co., Ltd. Microphone
US20110068917A1 (en) * 2009-09-22 2011-03-24 Rudolph Puana Emergency Notification Apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1181947A (en) * 1915-07-22 1916-05-02 Connecticut Telephone & Elec Telephone.
US2087027A (en) * 1935-04-15 1937-07-13 United Scient Lab Inc Loudspeaker telephone system
US2157140A (en) * 1936-09-26 1939-05-09 Louis A Molin Transmitting and amplifying system
GB1132378A (en) * 1966-07-02 1968-10-30 Malcolm Neville Shute Improvements in or relating to telephone equipment

Also Published As

Publication number Publication date
US3707607A (en) 1972-12-26
CA936294A (en) 1973-10-30

Similar Documents

Publication Publication Date Title
CA966943A (en) Mobile telephone cellular switching system
CA997492A (en) Handsfree loudspeaking key telephone set and a switching circuit for use in a microphone and loudspeaker equipped key telephone
CA936294A (en) Hands-free emergency call box
JPS5362404A (en) Incoming call charging system
GB1324058A (en) Telephone handset
JPS547803A (en) Cordless telephone set
JPS52116004A (en) Voice call system
AU406551B2 (en) Circuit arrangement for releasing audio frequency call signals in subscriber stations in communications, particularly telephone installations
AU909166A (en) Circuit arrangement for releasing audio frequency call signals in subscriber stations in communications, particularly telephone installations
CA624543A (en) Combined direct dispatch telephone exchange mobile radio system
AU453324B2 (en) A mobile apparatus fora radiomobile telecommunications system integrated with the public telephone network
CA638257A (en) Incoming telephone call pabx restrictive service
JPS5279707A (en) Key telephone main unit
JPS5329605A (en) Hand-free telephone set
ES183262U (es) Interfono perfeccionado.
AU2485071A (en) A mobile apparatus fora radiomobile telecommunications system integrated with the public telephone network
CA622887A (en) Telephone system for repertory dialing
JPS5410602A (en) Communication system for key telephone system
JPS5291308A (en) Trunk circuit
CA650806A (en) Telephone handsets
CA634434A (en) Telephone handsets
CA841131A (en) Mobile radio telephone system
FR1138931A (fr) Combiné (microphone et écouteur) pourvu de dispositifs pour recevoir et transmettre la conversation et la rendre silencieuse
GB1134908A (en) Selective ringing in a telephone system
CA664568A (en) Telephone handset support

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19860217