NL78690C - - Google Patents

Info

Publication number: NL78690C
Authority: NL; Netherlands

Application number

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.)

1949-04-26

Publication of NL78690C publication Critical patent/NL78690C/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
- H04M15/08—Metering calls to called party, i.e. B-party charged for the communication

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Interface Circuits In Exchanges (AREA)
Alarm Systems (AREA)

NL78690D 1949-04-26 NL78690C (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US89750A US2550585A (en)	1949-04-26	1949-04-26	Telephone identification circuit

Publications (1)

Publication Number	Publication Date
NL78690C true NL78690C (de)

Family

ID=22219408

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL78690D NL78690C (de)	1949-04-26

Country Status (6)

Country	Link
US (1)	US2550585A (de)
BE (1)	BE495130A (de)
DE (1)	DE822411C (de)
FR (1)	FR1017517A (de)
GB (1)	GB683911A (de)
NL (1)	NL78690C (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2708690A (en) *	1950-08-05	1955-05-17	Automatic Elect Lab	Party line telephone systems
US2872519A (en) *	1952-03-24	1959-02-03	North Electric Co	Automatic telephone system
US2809235A (en) *	1953-02-11	1957-10-08	Gen Dynamics Corp	Telephone system
US2820100A (en) *	1954-02-26	1958-01-14	Bell Telephone Labor Inc	Station identification device
US2779823A (en) *	1954-09-17	1957-01-29	Ericsson Telefon Ab L M	Connecting device in automatic telephone systems

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2299513A (en) *	1940-06-06	1942-10-20	Ass Telephone & Telegraph Co	Telephone or like system
US2270246A (en) *	1940-09-20	1942-01-20	Bell Telephone Labor Inc	Telephone system
NL74027C (de) *	1940-09-20
US2252766A (en) *	1940-10-17	1941-08-19	Bell Telephone Labor Inc	Signaling system
US2344612A (en) *	1942-06-27	1944-03-21	Bell Telephone Labor Inc	Electric signaling

0
- NL NL78690D patent/NL78690C/xx active
- BE BE495130D patent/BE495130A/xx unknown
1949
- 1949-04-26 US US89750A patent/US2550585A/en not_active Expired - Lifetime
1950
- 1950-03-07 FR FR1017517D patent/FR1017517A/fr not_active Expired
- 1950-03-14 DE DEW1403A patent/DE822411C/de not_active Expired
- 1950-04-21 GB GB9863/50A patent/GB683911A/en not_active Expired

Also Published As

Publication number	Publication date
GB683911A (en)	1952-12-10
DE822411C (de)	1951-11-26
US2550585A (en)	1951-04-24
FR1017517A (fr)	1952-12-11
BE495130A (de)

Publication	Publication Date	Title
AT166754B (de)	1950-09-25
FR65906E (de)	1956-03-27
AT193848B (de)	1957-12-10
FR963555A (de)	1950-07-17
BE487926A (de)
BE487077A (de)	1949-02-15
BE498015A (de)
BE497908A (de)
BE487959A (de)
BE495126A (de)
BE476829A (de)
BE493526A (de)
BE476643A (de)
BE488550A (de)
BE488514A (de)
BE479156A (de)
BE476015A (de)
BE488446A (de)
BE488429A (de)	1949-04-30
BE488426A (de)
BE488420A (de)
BE488341A (de)
BE488285A (de)
BE457200A (de)
BE449134A (de)