FR567342A - Perfectionnements aux phonographes - Google Patents

Perfectionnements aux phonographes

Info

Publication number
FR567342A
FR567342A FR567342DA FR567342A FR 567342 A FR567342 A FR 567342A FR 567342D A FR567342D A FR 567342DA FR 567342 A FR567342 A FR 567342A
Authority
FR
France
Prior art keywords
phonographs
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)
Inventor
Cornelius Collier
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 FR567342A publication Critical patent/FR567342A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR567342D 1923-05-29 1923-05-29 Perfectionnements aux phonographes Expired FR567342A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR567342T 1923-05-29

Publications (1)

Publication Number Publication Date
FR567342A true FR567342A (fr) 1924-02-29

Family

ID=8947718

Family Applications (1)

Application Number Title Priority Date Filing Date
FR567342D Expired FR567342A (fr) 1923-05-29 1923-05-29 Perfectionnements aux phonographes

Country Status (1)

Country Link
FR (1) FR567342A (fr)

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