FR1105542A - Method and devices for intercommunication between plasionts telephone lines not electrically connected - Google Patents

Method and devices for intercommunication between plasionts telephone lines not electrically connected

Info

Publication number
FR1105542A
FR1105542A FR1105542DA FR1105542A FR 1105542 A FR1105542 A FR 1105542A FR 1105542D A FR1105542D A FR 1105542DA FR 1105542 A FR1105542 A FR 1105542A
Authority
FR
France
Prior art keywords
plasionts
intercommunication
devices
electrically connected
telephone lines
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
Julien Vacher
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 filed Critical
Application granted granted Critical
Publication of FR1105542A publication Critical patent/FR1105542A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F13/00—Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
FR1105542D 1954-05-26 1954-05-26 Method and devices for intercommunication between plasionts telephone lines not electrically connected Expired FR1105542A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1105542T 1954-05-26

Publications (1)

Publication Number Publication Date
FR1105542A true FR1105542A (en) 1955-12-05

Family

ID=9623452

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1105542D Expired FR1105542A (en) 1954-05-26 1954-05-26 Method and devices for intercommunication between plasionts telephone lines not electrically connected

Country Status (1)

Country Link
FR (1) FR1105542A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162373A (en) * 1978-06-29 1979-07-24 Systems Consultants, Inc. Flexible acoustic coupler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162373A (en) * 1978-06-29 1979-07-24 Systems Consultants, Inc. Flexible acoustic coupler

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