NO139716C - Anordning ved akustiske signalorgan i teleforapparater - Google Patents

Anordning ved akustiske signalorgan i teleforapparater

Info

Publication number: NO139716C
Authority: NO; Norway
Prior art keywords: acoustic signal; telephone devices; signal bodies; bodies; telephone
Prior art date: 1976-10-14

Application number

NO773519A

Other languages

English (en)

Norwegian (no)

Other versions

NO773519L (no

NO139716B (no

Inventor

Sten Evert Magnusson

Original Assignee

Ericsson Telefon Ab L M

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.)

1976-10-14

Filing date

1977-10-13

Publication date

1979-05-02

1977-10-13 Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M

1978-04-17 Publication of NO773519L publication Critical patent/NO773519L/no

1979-01-15 Publication of NO139716B publication Critical patent/NO139716B/no

1979-05-02 Publication of NO139716C publication Critical patent/NO139716C/no

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Telephone Set Structure (AREA)
Sub-Exchange Stations And Push- Button Telephones (AREA)
Telephone Function (AREA)
Devices For Supply Of Signal Current (AREA)
Telephonic Communication Services (AREA)

NO773519A 1976-10-14 1977-10-13 Anordning ved akustiske signalorgan i teleforapparater NO139716C (no)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE7611406A SE397161B (sv)	1976-10-14	1976-10-14	Anordning vid akustiska signalorgan i telefonapparater

Publications (3)

Publication Number	Publication Date
NO773519L NO773519L (no)	1978-04-17
NO139716B NO139716B (no)	1979-01-15
NO139716C true NO139716C (no)	1979-05-02

Family

ID=20329130

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO773519A NO139716C (no)	1976-10-14	1977-10-13	Anordning ved akustiske signalorgan i teleforapparater

Country Status (10)

Country	Link
BE (1)	BE859191A (it)
CH (1)	CH623694A5 (it)
DE (1)	DE2742748A1 (it)
DK (1)	DK455577A (it)
ES (1)	ES463052A1 (it)
FR (1)	FR2368185A1 (it)
IT (1)	IT1087777B (it)
NL (1)	NL7710303A (it)
NO (1)	NO139716C (it)
SE (1)	SE397161B (it)

1976
- 1976-10-14 SE SE7611406A patent/SE397161B/xx not_active IP Right Cessation
1977
- 1977-09-20 NL NL7710303A patent/NL7710303A/xx not_active Application Discontinuation
- 1977-09-22 DE DE19772742748 patent/DE2742748A1/de not_active Withdrawn
- 1977-09-29 BE BE181300A patent/BE859191A/xx not_active IP Right Cessation
- 1977-10-03 FR FR7729665A patent/FR2368185A1/fr not_active Withdrawn
- 1977-10-07 CH CH1228277A patent/CH623694A5/de not_active IP Right Cessation
- 1977-10-08 ES ES463052A patent/ES463052A1/es not_active Expired
- 1977-10-13 DK DK455577A patent/DK455577A/da unknown
- 1977-10-13 NO NO773519A patent/NO139716C/no unknown
- 1977-10-14 IT IT28606/77A patent/IT1087777B/it active

Also Published As

Publication number	Publication date
ES463052A1 (es)	1978-07-01
IT1087777B (it)	1985-06-04
CH623694A5 (en)	1981-06-15
DK455577A (da)	1978-04-15
FR2368185A1 (fr)	1978-05-12
NO773519L (no)	1978-04-17
NL7710303A (nl)	1978-04-18
SE397161B (sv)	1977-10-17
DE2742748A1 (de)	1978-04-20
BE859191A (fr)	1978-01-16
NO139716B (no)	1979-01-15

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