FR512310A - Improvements to voice current repeaters used in telephony - Google Patents

Improvements to voice current repeaters used in telephony

Info

Publication number
FR512310A
FR512310A FR512310A FR512310DA FR512310A FR 512310 A FR512310 A FR 512310A FR 512310 A FR512310 A FR 512310A FR 512310D A FR512310D A FR 512310DA FR 512310 A FR512310 A FR 512310A
Authority
FR
France
Prior art keywords
telephony
voice current
current repeaters
repeaters used
voice
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
FR512310A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR512310A publication Critical patent/FR512310A/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)
  • Devices For Supply Of Signal Current (AREA)
FR512310A 1919-03-27 1920-03-24 Improvements to voice current repeaters used in telephony Expired FR512310A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US512310XA 1919-03-27 1919-03-27

Publications (1)

Publication Number Publication Date
FR512310A true FR512310A (en) 1921-01-20

Family

ID=21970085

Family Applications (1)

Application Number Title Priority Date Filing Date
FR512310A Expired FR512310A (en) 1919-03-27 1920-03-24 Improvements to voice current repeaters used in telephony

Country Status (2)

Country Link
US (1) US1460814A (en)
FR (1) FR512310A (en)

Also Published As

Publication number Publication date
US1460814A (en) 1923-07-03

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