FR547394A - Switching device for the reversibility of amplifiers on telephone lines - Google Patents

Switching device for the reversibility of amplifiers on telephone lines

Info

Publication number
FR547394A
FR547394A FR547394DA FR547394A FR 547394 A FR547394 A FR 547394A FR 547394D A FR547394D A FR 547394DA FR 547394 A FR547394 A FR 547394A
Authority
FR
France
Prior art keywords
reversibility
amplifiers
switching device
telephone lines
telephone
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.)
SOC ET LIAISONS TELEPHONIQUES
Original Assignee
SOC ET LIAISONS TELEPHONIQUES
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 SOC ET LIAISONS TELEPHONIQUES filed Critical SOC ET LIAISONS TELEPHONIQUES
Application granted granted Critical
Publication of FR547394A publication Critical patent/FR547394A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR547394D 1922-02-17 1922-02-17 Switching device for the reversibility of amplifiers on telephone lines Expired FR547394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR547394T 1922-02-17

Publications (1)

Publication Number Publication Date
FR547394A true FR547394A (en) 1922-12-09

Family

ID=8934187

Family Applications (1)

Application Number Title Priority Date Filing Date
FR547394D Expired FR547394A (en) 1922-02-17 1922-02-17 Switching device for the reversibility of amplifiers on telephone lines

Country Status (1)

Country Link
FR (1) FR547394A (en)

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