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FR708705A - Circuit arrangements for automatic or semi-automatic central office telephone systems - Google Patents

Circuit arrangements for automatic or semi-automatic central office telephone systems

Info

Publication number
FR708705A
FR708705A FR708705DA FR708705A FR 708705 A FR708705 A FR 708705A FR 708705D A FR708705D A FR 708705DA FR 708705 A FR708705 A FR 708705A
Authority
FR
France
Prior art keywords
automatic
semi
central office
telephone systems
circuit arrangements
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 FR708705A publication Critical patent/FR708705A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
FR708705D 1929-05-31 1930-04-07 Circuit arrangements for automatic or semi-automatic central office telephone systems Expired FR708705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16783/29A GB334247A (en) 1929-05-31 1929-05-31 Improvements in or relating to automatic or semi-automatic telephone exchange systems

Publications (1)

Publication Number Publication Date
FR708705A true FR708705A (en) 1931-07-27

Family

ID=10083578

Family Applications (1)

Application Number Title Priority Date Filing Date
FR708705D Expired FR708705A (en) 1929-05-31 1930-04-07 Circuit arrangements for automatic or semi-automatic central office telephone systems

Country Status (3)

Country Link
US (1) US1821998A (en)
FR (1) FR708705A (en)
GB (2) GB334248A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787665A (en) * 1952-02-14 1957-04-02 Nederlanden Staat Matching register controlled circuit for a switching network
NL94753C (en) * 1952-03-21

Also Published As

Publication number Publication date
US1821998A (en) 1931-09-08
GB334248A (en) 1930-09-01
GB334247A (en) 1930-09-01

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