FR731952A - Improvements to automatic or semi-automatic telephone systems - Google Patents

Improvements to automatic or semi-automatic telephone systems

Info

Publication number
FR731952A
FR731952A FR731952DA FR731952A FR 731952 A FR731952 A FR 731952A FR 731952D A FR731952D A FR 731952DA FR 731952 A FR731952 A FR 731952A
Authority
FR
France
Prior art keywords
automatic
semi
telephone systems
automatic telephone
systems
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 FR731952A publication Critical patent/FR731952A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR731952D 1931-04-23 1931-04-23 Improvements to automatic or semi-automatic telephone systems Expired FR731952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR731952T 1931-04-23

Publications (1)

Publication Number Publication Date
FR731952A true FR731952A (en) 1932-09-10

Family

ID=9120194

Family Applications (1)

Application Number Title Priority Date Filing Date
FR731952D Expired FR731952A (en) 1931-04-23 1931-04-23 Improvements to automatic or semi-automatic telephone systems

Country Status (1)

Country Link
FR (1) FR731952A (en)

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