ATA482375A - CIRCUIT ARRANGEMENT FOR KEY-CONTROLLED INTERCOM, INTERCOM OR SPEAKER SYSTEMS - Google Patents

CIRCUIT ARRANGEMENT FOR KEY-CONTROLLED INTERCOM, INTERCOM OR SPEAKER SYSTEMS

Info

Publication number: ATA482375A
Authority: AT; Austria
Prior art keywords: intercom; key; circuit arrangement; controlled; speaker systems
Prior art date: 1974-07-17

Application number

AT482375A

Other languages

German (de)

Other versions

AT341590B (en

Inventor

Lothar Bartoleit

Walter Herrmann

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.)

1974-07-17

Filing date

1975-06-24

Publication date

1977-06-15

1975-06-24 Application filed by Neumann Elektronik Gmbh filed Critical Neumann Elektronik Gmbh

1977-06-15 Publication of ATA482375A publication Critical patent/ATA482375A/en

1978-02-10 Application granted granted Critical

1978-02-10 Publication of AT341590B publication Critical patent/AT341590B/en

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Circuit For Audible Band Transducer (AREA)
Interface Circuits In Exchanges (AREA)
Devices For Supply Of Signal Current (AREA)
Mobile Radio Communication Systems (AREA)

AT482375A 1974-07-17 1975-06-24 CIRCUIT ARRANGEMENT FOR KEY-CONTROLLED INTERCOM, INTERCOM OR SPEAKER SYSTEMS AT341590B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2434321A DE2434321C3 (en)	1974-07-17	1974-07-17	Circuit arrangement for button-controlled intercom, intercom or loudspeaker systems

Publications (2)

Publication Number	Publication Date
ATA482375A true ATA482375A (en)	1977-06-15
AT341590B AT341590B (en)	1978-02-10

Family

ID=5920787

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT482375A AT341590B (en)	1974-07-17	1975-06-24	CIRCUIT ARRANGEMENT FOR KEY-CONTROLLED INTERCOM, INTERCOM OR SPEAKER SYSTEMS

Country Status (9)

Country	Link
AT (1)	AT341590B (en)
BE (1)	BE831415A (en)
CH (1)	CH596721A5 (en)
DE (1)	DE2434321C3 (en)
ES (1)	ES439298A1 (en)
FI (1)	FI61111C (en)
FR (1)	FR2289079A1 (en)
NO (1)	NO141583C (en)
SE (1)	SE7508032L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2837950C2 (en) *	1978-08-31	1986-11-13	Neumann Elektronik GmbH, 4330 Mülheim	Switching device for a button-controlled exchange, counter or loudspeaker system
DE3418484C1 (en) *	1984-05-18	1985-08-29	Neumann Elektronik GmbH, 4330 Mülheim	Talkback device for a subscriber station of a button-controlled intercom system with line selection
DE4334906C2 (en) *	1993-10-13	1997-05-07	Neumann Elektronik Gmbh	Device for the transmission of call and occupancy status signals from two-way or intercom systems with line selection via a two-wire transmission line

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1512811C3 (en) *	1967-04-27	1984-08-02	ANT Nachrichtentechnik GmbH, 7150 Backnang	Circuit arrangement for testing the call station's own facilities in intercom systems

1974
- 1974-07-17 DE DE2434321A patent/DE2434321C3/en not_active Expired
1975
- 1975-06-24 AT AT482375A patent/AT341590B/en not_active IP Right Cessation
- 1975-06-25 CH CH827875A patent/CH596721A5/xx not_active IP Right Cessation
- 1975-07-07 FI FI751974A patent/FI61111C/en not_active IP Right Cessation
- 1975-07-10 ES ES439298A patent/ES439298A1/en not_active Expired
- 1975-07-11 FR FR7522457A patent/FR2289079A1/en active Granted
- 1975-07-14 SE SE7508032A patent/SE7508032L/en unknown
- 1975-07-16 NO NO752541A patent/NO141583C/en unknown
- 1975-07-16 BE BE158337A patent/BE831415A/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
DE2434321A1 (en)	1976-01-22
FR2289079A1 (en)	1976-05-21
DE2434321B2 (en)	1977-01-20
AT341590B (en)	1978-02-10
SE7508032L (en)	1976-01-19
FR2289079B1 (en)	1982-03-26
BE831415A (en)	1975-11-17
ES439298A1 (en)	1977-03-01
DE2434321C3 (en)	1983-12-08
FI751974A7 (en)	1976-01-18
NO141583B (en)	1979-12-27
NO141583C (en)	1980-04-09
CH596721A5 (en)	1978-03-15
FI61111B (en)	1982-01-29
NO752541L (en)	1976-01-20
FI61111C (en)	1982-05-10

Similar Documents

Publication	Publication Date	Title
NL7413937A (en)	1976-04-27	MICROPHONE SYSTEM.
NL7513921A (en)	1976-06-01	AID SYSTEM.
NL7600177A (en)	1976-10-05	SPEAKER SYSTEM.
SE7506463L (en)	1975-12-11	RADIO TELEPHONE SYSTEM.
NL7509515A (en)	1976-03-02	STEREOPHONE SOUND SYSTEM.
NL169943C (en)	1982-09-01	COMMUNICATION SYSTEM.
BR7502285A (en)	1976-03-09	TELEPHONE SYSTEM
NL169766C (en)	1982-08-16	MOUNTING CONSTRUCTION SYSTEM.
NL7609516A (en)	1977-03-02	COMMUNICATION SYSTEM.
SE7507069L (en)	1975-12-29	QUICK PHONE SYSTEM.
NL7514138A (en)	1976-06-15	SPEAKING TELEPHONE SYSTEM.
NL7513444A (en)	1976-05-20	COMMUNICATION SYSTEM.
NL7501953A (en)	1975-10-03	ELECTRONIC SYSTEM.
NL7500501A (en)	1975-07-28	TELEPHONE DIALING SYSTEM.
NL7508314A (en)	1976-01-14	TRANSISTOR SYSTEM.
AT341590B (en)	1978-02-10	CIRCUIT ARRANGEMENT FOR KEY-CONTROLLED INTERCOM, INTERCOM OR SPEAKER SYSTEMS
SE414215B (en)	1980-07-14	ELECTRONIC TENDING SYSTEM.
NL7514573A (en)	1976-06-28	SELF-CENTERING RESTRICTION BUS SYSTEM.
DK138298B (en)	1978-08-07	Program warehouse-controlled telecommunication system.
ES213321Y (en)	1976-11-01	SPEAKER GRILLE.
NL7500996A (en)	1975-08-04	SECURITY CIRCUIT.
NO139841C (en)	1979-05-16	TELECOMMUNICATION SYSTEM.
NL7416853A (en)	1975-08-11	FACSIMIL SYSTEM.
SE409537B (en)	1979-08-20	TELEPHONE SYSTEM
SE7504481L (en)	1975-10-20	DIAMENTAL CIRCUITS.

Legal Events

Date	Code	Title	Description
1995-03-15	ELJ	Ceased due to non-payment of the annual fee