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FR714458A - Circuit arrangements for automatic or semi-automatic telephone systems - Google Patents

Circuit arrangements for automatic or semi-automatic telephone systems

Info

Publication number
FR714458A
FR714458A FR714458DA FR714458A FR 714458 A FR714458 A FR 714458A FR 714458D A FR714458D A FR 714458DA FR 714458 A FR714458 A FR 714458A
Authority
FR
France
Prior art keywords
automatic
semi
telephone systems
circuit arrangements
automatic telephone
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR714458A publication Critical patent/FR714458A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
FR714458D 1930-03-10 1931-03-05 Circuit arrangements for automatic or semi-automatic telephone systems Expired FR714458A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB772430A GB350900A (en) 1930-03-10 1930-03-10 Improvements in or relating to long distance working in telephone systems

Publications (1)

Publication Number Publication Date
FR714458A true FR714458A (en) 1931-11-14

Family

ID=9838532

Family Applications (1)

Application Number Title Priority Date Filing Date
FR714458D Expired FR714458A (en) 1930-03-10 1931-03-05 Circuit arrangements for automatic or semi-automatic telephone systems

Country Status (2)

Country Link
FR (1) FR714458A (en)
GB (1) GB350900A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918869C (en) * 1942-12-14 1954-10-07 Siemens Ag Circuit arrangement for telephone systems
GB654639A (en) * 1947-02-07 1951-06-27 Standard Telephones Cables Ltd Improvements in or relating to electric signalling systems

Also Published As

Publication number Publication date
GB350900A (en) 1931-06-10

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