BE424612A - - Google Patents

Info

Publication number
BE424612A
BE424612A BE424612DA BE424612A BE 424612 A BE424612 A BE 424612A BE 424612D A BE424612D A BE 424612DA BE 424612 A BE424612 A BE 424612A
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 BE424612A publication Critical patent/BE424612A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Amplifiers (AREA)
BE424612D 1936-11-14 BE424612A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US110864A US2159081A (en) 1936-11-14 1936-11-14 Telephone system

Publications (1)

Publication Number Publication Date
BE424612A true BE424612A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=27788412

Family Applications (1)

Application Number Title Priority Date Filing Date
BE424612D BE424612A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1936-11-14

Country Status (3)

Country Link
US (1) US2159081A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE424612A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB503497A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482478A (en) * 1947-03-29 1949-09-20 Automatic Elect Lab Tone unit
BE499462A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1949-11-22

Also Published As

Publication number Publication date
GB503497A (en) 1939-04-05
US2159081A (en) 1939-05-23

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