FR562964A - Transformation acoustique pour conduites à distance - Google Patents

Transformation acoustique pour conduites à distance

Info

Publication number
FR562964A
FR562964A FR562964DA FR562964A FR 562964 A FR562964 A FR 562964A FR 562964D A FR562964D A FR 562964DA FR 562964 A FR562964 A FR 562964A
Authority
FR
France
Prior art keywords
acoustic transformation
pipelines
remote
remote pipelines
acoustic
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
English (en)
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.)
DE NL THERMO TELEPHOON MIJ NV
Original Assignee
DE NL THERMO TELEPHOON MIJ NV
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 DE NL THERMO TELEPHOON MIJ NV filed Critical DE NL THERMO TELEPHOON MIJ NV
Application granted granted Critical
Publication of FR562964A publication Critical patent/FR562964A/fr
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)
FR562964D 1922-03-07 1923-02-27 Transformation acoustique pour conduites à distance Expired FR562964A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE562964X 1922-03-07

Publications (1)

Publication Number Publication Date
FR562964A true FR562964A (fr) 1923-11-23

Family

ID=6566622

Family Applications (1)

Application Number Title Priority Date Filing Date
FR562964D Expired FR562964A (fr) 1922-03-07 1923-02-27 Transformation acoustique pour conduites à distance

Country Status (1)

Country Link
FR (1) FR562964A (fr)

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