FR25247E - Improvements made to central telephone offices - Google Patents

Improvements made to central telephone offices

Info

Publication number
FR25247E
FR25247E FR25247DA FR25247E FR 25247 E FR25247 E FR 25247E FR 25247D A FR25247D A FR 25247DA FR 25247 E FR25247 E FR 25247E
Authority
FR
France
Prior art keywords
improvements made
central telephone
telephone offices
offices
central
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 FR25247E publication Critical patent/FR25247E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/08—Manual exchanges using connecting means other than cords

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR25247D 1921-08-24 1921-08-24 Improvements made to central telephone offices Expired FR25247E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR25247T 1921-08-24

Publications (1)

Publication Number Publication Date
FR25247E true FR25247E (en) 1923-01-08

Family

ID=8663789

Family Applications (1)

Application Number Title Priority Date Filing Date
FR25247D Expired FR25247E (en) 1921-08-24 1921-08-24 Improvements made to central telephone offices

Country Status (1)

Country Link
FR (1) FR25247E (en)

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