FR547543A - Improvements to microtelphone receivers - Google Patents

Improvements to microtelphone receivers

Info

Publication number
FR547543A
FR547543A FR547543DA FR547543A FR 547543 A FR547543 A FR 547543A FR 547543D A FR547543D A FR 547543DA FR 547543 A FR547543 A FR 547543A
Authority
FR
France
Prior art keywords
microtelphone
receivers
microtelphone receivers
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
Leon Magnien
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 FR547543A publication Critical patent/FR547543A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
FR547543D 1917-05-05 1917-05-05 Improvements to microtelphone receivers Expired FR547543A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR547543T 1917-05-05

Publications (1)

Publication Number Publication Date
FR547543A true FR547543A (en) 1922-12-18

Family

ID=8934297

Family Applications (1)

Application Number Title Priority Date Filing Date
FR547543D Expired FR547543A (en) 1917-05-05 1917-05-05 Improvements to microtelphone receivers

Country Status (1)

Country Link
FR (1) FR547543A (en)

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