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FR463735A - Telephone relay - Google Patents

Telephone relay

Info

Publication number
FR463735A
FR463735A FR463735A FR463735DA FR463735A FR 463735 A FR463735 A FR 463735A FR 463735 A FR463735 A FR 463735A FR 463735D A FR463735D A FR 463735DA FR 463735 A FR463735 A FR 463735A
Authority
FR
France
Prior art keywords
telephone relay
relay
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
FR463735A
Other languages
French (fr)
Inventor
Josef Schiessler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR463735A publication Critical patent/FR463735A/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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
FR463735A 1912-07-15 1913-07-10 Telephone relay Expired FR463735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT191315179X 1912-07-15

Publications (1)

Publication Number Publication Date
FR463735A true FR463735A (en) 1914-03-03

Family

ID=32601447

Family Applications (1)

Application Number Title Priority Date Filing Date
FR463735A Expired FR463735A (en) 1912-07-15 1913-07-10 Telephone relay

Country Status (3)

Country Link
DE (1) DE278950C (en)
FR (1) FR463735A (en)
GB (1) GB191315179A (en)

Also Published As

Publication number Publication date
GB191315179A (en) 1914-02-12
DE278950C (en)

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