CH133031A - Circuit breaking devices, in particular for telephone systems. - Google Patents

Circuit breaking devices, in particular for telephone systems.

Info

Publication number
CH133031A
CH133031A CH133031DA CH133031A CH 133031 A CH133031 A CH 133031A CH 133031D A CH133031D A CH 133031DA CH 133031 A CH133031 A CH 133031A
Authority
CH
Switzerland
Prior art keywords
telephone systems
circuit breaking
breaking devices
devices
circuit
Prior art date
Application number
Other languages
German (de)
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 CH133031A publication Critical patent/CH133031A/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
CH133031D 1927-03-19 1928-04-24 Circuit breaking devices, in particular for telephone systems. CH133031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB766627A GB292261A (en) 1927-03-19 1927-03-19 Improvements in circuit interrupting devices particularly applicable for telephone systems

Publications (1)

Publication Number Publication Date
CH133031A true CH133031A (en) 1929-05-15

Family

ID=9837478

Family Applications (1)

Application Number Title Priority Date Filing Date
CH133031D CH133031A (en) 1927-03-19 1928-04-24 Circuit breaking devices, in particular for telephone systems.

Country Status (5)

Country Link
BE (1) BE350874A (en)
CH (1) CH133031A (en)
FR (1) FR654068A (en)
GB (1) GB292261A (en)
NL (1) NL20970C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160017B (en) * 1984-06-05 1988-07-27 Inertia Switch Ltd Electrical switches responsive to two stimuli

Also Published As

Publication number Publication date
NL20970C (en)
BE350874A (en)
FR654068A (en) 1929-04-03
GB292261A (en) 1928-06-19

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