IT1107529B - Impianto elettrico di trasmissione,particolarmente impianto di fonocomunicazione reciproca o impianto interfonico o latoparlante - Google Patents

Impianto elettrico di trasmissione,particolarmente impianto di fonocomunicazione reciproca o impianto interfonico o latoparlante

Info

Publication number: IT1107529B
Authority: IT; Italy
Prior art keywords: interphone; electric transmission; phone communication; speaker; mutual phone
Prior art date: 1977-12-29

Application number

IT83641/78A

Other languages

English (en)

Other versions

IT7883641A0 (it

Inventor

Dirk Neumann

Walter Herrmann

Gunter Koenigsmann

Original Assignee

Neumann Elektronik Gmbh

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.)

1977-12-29

Filing date

1978-12-14

Publication date

1985-11-25

1978-12-14 Application filed by Neumann Elektronik Gmbh filed Critical Neumann Elektronik Gmbh

1978-12-14 Publication of IT7883641A0 publication Critical patent/IT7883641A0/it

1985-11-25 Application granted granted Critical

1985-11-25 Publication of IT1107529B publication Critical patent/IT1107529B/it

Links

230000005540 biological transmission Effects 0.000 title 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Transmitters (AREA)
Amplifiers (AREA)
Interconnected Communication Systems, Intercoms, And Interphones (AREA)

IT83641/78A 1977-12-29 1978-12-14 Impianto elettrico di trasmissione,particolarmente impianto di fonocomunicazione reciproca o impianto interfonico o latoparlante IT1107529B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2758776A DE2758776C2 (de)	1977-12-29	1977-12-29	Elektrische Übertragungsanlage, insbesondere Wechsel-, Gegen- oder Lautsprechanlage

Publications (2)

Publication Number	Publication Date
IT7883641A0 IT7883641A0 (it)	1978-12-14
IT1107529B true IT1107529B (it)	1985-11-25

Family

ID=6027669

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT83641/78A IT1107529B (it)	1977-12-29	1978-12-14	Impianto elettrico di trasmissione,particolarmente impianto di fonocomunicazione reciproca o impianto interfonico o latoparlante

Country Status (4)

Country	Link
AT (1)	AT374064B (it)
DE (1)	DE2758776C2 (it)
GB (1)	GB2011748B (it)
IT (1)	IT1107529B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3642378A1 (de) *	1986-12-11	1988-06-30	Siemens Ag	System zur uebertragung von informationen mit ersatzschalteinrichtungen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2422806C3 (de) *	1974-05-10	1985-08-29	Neumann Elektronik GmbH, 4330 Mülheim	Einrichtung zur Konzentration der Linienwahlmittel in einer tastengesteuerten Sprechanlage
DE2605499A1 (de) *	1976-02-12	1977-08-18	Licentia Gmbh	Schaltungsanordnung fuer die ueberwachung eines wechselspannungsverstaerkers

1977
- 1977-12-29 DE DE2758776A patent/DE2758776C2/de not_active Expired
1978
- 1978-09-06 AT AT0643978A patent/AT374064B/de not_active IP Right Cessation
- 1978-10-31 GB GB7842554A patent/GB2011748B/en not_active Expired
- 1978-12-14 IT IT83641/78A patent/IT1107529B/it active

Also Published As

Publication number	Publication date
ATA643978A (de)	1983-07-15
IT7883641A0 (it)	1978-12-14
GB2011748A (en)	1979-07-11
AT374064B (de)	1984-03-12
GB2011748B (en)	1982-04-28
DE2758776C2 (de)	1987-11-12
DE2758776A1 (de)	1979-08-16

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Legal Events

Date	Code	Title	Description
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19931230