CH231614A - Electric telecommunication system. - Google Patents

Electric telecommunication system.

Info

Publication number
CH231614A
CH231614A CH231614DA CH231614A CH 231614 A CH231614 A CH 231614A CH 231614D A CH231614D A CH 231614DA CH 231614 A CH231614 A CH 231614A
Authority
CH
Switzerland
Prior art keywords
telecommunication system
electric telecommunication
electric
telecommunication
Prior art date
Application number
Other languages
German (de)
Inventor
Bell Telephone Manufac Anonyme
Original Assignee
Bell Telephone Mfg
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.)
Filing date
Publication date
Application filed by Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH231614A publication Critical patent/CH231614A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Relay Circuits (AREA)
CH231614D 1935-11-21 1936-11-21 Electric telecommunication system. CH231614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50840A US2060184A (en) 1935-11-21 1935-11-21 Telephone system

Publications (1)

Publication Number Publication Date
CH231614A true CH231614A (en) 1944-03-31

Family

ID=21967791

Family Applications (1)

Application Number Title Priority Date Filing Date
CH231614D CH231614A (en) 1935-11-21 1936-11-21 Electric telecommunication system.

Country Status (2)

Country Link
US (1) US2060184A (en)
CH (1) CH231614A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE445114A (en) * 1941-04-15
BE466586A (en) * 1943-08-28
US2438496A (en) * 1944-05-01 1948-03-30 Int Standard Electric Corp Telephone system employing key type call transmitter
US2957952A (en) * 1958-05-09 1960-10-25 Bell Telephone Labor Inc Code generator

Also Published As

Publication number Publication date
US2060184A (en) 1936-11-10

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