CH122198A - Antriebseinrichtung für Unterbrechereinheiten von Telephonanlagen. - Google Patents

Antriebseinrichtung für Unterbrechereinheiten von Telephonanlagen.

Info

Publication number
CH122198A
CH122198A CH122198DA CH122198A CH 122198 A CH122198 A CH 122198A CH 122198D A CH122198D A CH 122198DA CH 122198 A CH122198 A CH 122198A
Authority
CH
Switzerland
Prior art keywords
drive device
telephone systems
interrupter units
interrupter
units
Prior art date
Application number
Other languages
English (en)
Inventor
Co Bell Telephon Manufacturing
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 CH122198A publication Critical patent/CH122198A/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
CH122198D 1925-05-29 1926-09-02 Antriebseinrichtung für Unterbrechereinheiten von Telephonanlagen. CH122198A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1420925A GB253350A (en) 1925-05-29 1925-05-29 Improvements in automatic telephone systems

Publications (1)

Publication Number Publication Date
CH122198A true CH122198A (de) 1927-10-01

Family

ID=10037021

Family Applications (1)

Application Number Title Priority Date Filing Date
CH122198D CH122198A (de) 1925-05-29 1926-09-02 Antriebseinrichtung für Unterbrechereinheiten von Telephonanlagen.

Country Status (4)

Country Link
BE (1) BE333678A (de)
CH (1) CH122198A (de)
FR (1) FR618081A (de)
GB (1) GB253350A (de)

Also Published As

Publication number Publication date
GB253350A (en) 1926-06-17
BE333678A (de)
FR618081A (fr) 1927-03-02

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