FR523802A - Improvements to so-called "standard" central telephone switches - Google Patents

Improvements to so-called "standard" central telephone switches

Info

Publication number
FR523802A
FR523802A FR523802A FR523802DA FR523802A FR 523802 A FR523802 A FR 523802A FR 523802 A FR523802 A FR 523802A FR 523802D A FR523802D A FR 523802DA FR 523802 A FR523802 A FR 523802A
Authority
FR
France
Prior art keywords
standard
called
central telephone
telephone switches
switches
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
FR523802A
Other languages
French (fr)
Inventor
Charles Tournaire
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.)
CHARLES TOURNAIRE
Original Assignee
CHARLES TOURNAIRE
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 CHARLES TOURNAIRE filed Critical CHARLES TOURNAIRE
Application granted granted Critical
Publication of FR523802A publication Critical patent/FR523802A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/02—Constructional details

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR523802A 1917-03-31 1917-03-31 Improvements to so-called "standard" central telephone switches Expired FR523802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR523802T 1917-03-31

Publications (1)

Publication Number Publication Date
FR523802A true FR523802A (en) 1921-08-25

Family

ID=8918846

Family Applications (1)

Application Number Title Priority Date Filing Date
FR523802A Expired FR523802A (en) 1917-03-31 1917-03-31 Improvements to so-called "standard" central telephone switches

Country Status (1)

Country Link
FR (1) FR523802A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2168991A1 (en) * 1972-01-28 1973-09-07 Pissis Sauvadet Ets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2168991A1 (en) * 1972-01-28 1973-09-07 Pissis Sauvadet Ets

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