FR976979A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR976979A
FR976979A FR976979DA FR976979A FR 976979 A FR976979 A FR 976979A FR 976979D A FR976979D A FR 976979DA FR 976979 A FR976979 A FR 976979A
Authority
FR
France
Prior art keywords
telephone systems
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)
Inventor
Henri-Louis Lesigne
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Application granted granted Critical
Publication of FR976979A publication Critical patent/FR976979A/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
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
FR976979D 1942-05-28 1942-05-28 Improvements to telephone systems Expired FR976979A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR976979T 1942-05-28

Publications (1)

Publication Number Publication Date
FR976979A true FR976979A (en) 1951-03-27

Family

ID=9519283

Family Applications (1)

Application Number Title Priority Date Filing Date
FR976979D Expired FR976979A (en) 1942-05-28 1942-05-28 Improvements to telephone systems

Country Status (2)

Country Link
CH (1) CH275633A (en)
FR (1) FR976979A (en)

Also Published As

Publication number Publication date
CH275633A (en) 1951-05-31

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