FR357253A - Loudspeaker combined telephone and telegraph system - Google Patents

Loudspeaker combined telephone and telegraph system

Info

Publication number
FR357253A
FR357253A FR357253DA FR357253A FR 357253 A FR357253 A FR 357253A FR 357253D A FR357253D A FR 357253DA FR 357253 A FR357253 A FR 357253A
Authority
FR
France
Prior art keywords
telegraph system
combined telephone
loudspeaker
loudspeaker combined
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.)
CIE GENERALE D ELECTRICITE APP
Original Assignee
CIE GENERALE D ELECTRICITE APP
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 CIE GENERALE D ELECTRICITE APP filed Critical CIE GENERALE D ELECTRICITE APP
Application granted granted Critical
Publication of FR357253A publication Critical patent/FR357253A/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)
FR357253D 1905-08-26 1905-08-26 Loudspeaker combined telephone and telegraph system Expired FR357253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR357253T 1905-08-26

Publications (1)

Publication Number Publication Date
FR357253A true FR357253A (en) 1905-12-22

Family

ID=1405164

Family Applications (1)

Application Number Title Priority Date Filing Date
FR357253D Expired FR357253A (en) 1905-08-26 1905-08-26 Loudspeaker combined telephone and telegraph system

Country Status (1)

Country Link
FR (1) FR357253A (en)

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