FR572381A - Improvements in phonographs - Google Patents

Improvements in phonographs

Info

Publication number
FR572381A
FR572381A FR572381DA FR572381A FR 572381 A FR572381 A FR 572381A FR 572381D A FR572381D A FR 572381DA FR 572381 A FR572381 A FR 572381A
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
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.)
ELECTONE Co
Original Assignee
ELECTONE Co
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 ELECTONE Co filed Critical ELECTONE Co
Application granted granted Critical
Publication of FR572381A publication Critical patent/FR572381A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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)
FR572381D 1923-10-26 1923-10-26 Improvements in phonographs Expired FR572381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR572381T 1923-10-26

Publications (1)

Publication Number Publication Date
FR572381A true FR572381A (en) 1924-06-04

Family

ID=8951199

Family Applications (1)

Application Number Title Priority Date Filing Date
FR572381D Expired FR572381A (en) 1923-10-26 1923-10-26 Improvements in phonographs

Country Status (1)

Country Link
FR (1) FR572381A (en)

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