BE538125A - - Google Patents

Info

Publication number: BE538125A
Authority: BE; Belgium

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.)

1954-05-14

Publication of BE538125A publication Critical patent/BE538125A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Sub-Exchange Stations And Push- Button Telephones (AREA)

BE538125D 1954-05-14 BE538125A (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US429748A US2874225A (en)	1954-05-14	1954-05-14	Busy-verification automatic telephone system

Publications (1)

Publication Number	Publication Date
BE538125A true BE538125A (cg-RX-API-DMAC7.html)

Family

ID=23704575

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE538125D BE538125A (cg-RX-API-DMAC7.html)	1954-05-14

Country Status (2)

Country	Link
US (1)	US2874225A (cg-RX-API-DMAC7.html)
BE (1)	BE538125A (cg-RX-API-DMAC7.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3410960A (en) *	1965-03-09	1968-11-12	Bell Telephone Labor Inc	No-test or busy verification in a private branch exchange telephone system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1929587A (en) *	1931-05-22	1933-10-10	Siemens Ag	Telephone system
FR964165A (cg-RX-API-DMAC7.html) *	1940-07-11	1950-08-08
US2337365A (en) *	1941-12-15	1943-12-21	Automatic Elect Lab	Telephone system
US2365996A (en) *	1942-08-12	1944-12-26	Kellogg Switchboard & Supply	Private branch exchange automatic telephone system
GB588563A (en) *	1944-08-25	1947-05-28	Automatic Telephone & Elect	Improvements in or relating to telephone systems

0
- BE BE538125D patent/BE538125A/xx unknown
1954
- 1954-05-14 US US429748A patent/US2874225A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US2874225A (en)	1959-02-17

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