BE538125A - - Google Patents

Info

Publication number
BE538125A
BE538125A BE538125DA BE538125A BE 538125 A BE538125 A BE 538125A BE 538125D A BE538125D A BE 538125DA BE 538125 A BE538125 A BE 538125A
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.)
Publication of BE538125A publication Critical patent/BE538125A/xx

Links

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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=23704575

Family Applications (1)

Application Number Title Priority Date Filing Date
BE538125D BE538125A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1954-05-14

Country Status (2)

Country Link
US (1) US2874225A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE538125A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.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

Also Published As

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

Similar Documents

Publication Publication Date Title
AT192924B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195977B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195459B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT196304B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT196486B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT197898B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195836B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195345B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE1049603B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195943B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT196650B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195750B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195822B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195335B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195139B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT194954B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR1076931A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT197683B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT195552B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT196784B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT196786B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT196970B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT197095B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT197727B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT197192B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)