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FR452994A - Perfectionnements aux machines parlantes - Google Patents

Perfectionnements aux machines parlantes

Info

Publication number
FR452994A
FR452994A FR452994DA FR452994A FR 452994 A FR452994 A FR 452994A FR 452994D A FR452994D A FR 452994DA FR 452994 A FR452994 A FR 452994A
Authority
FR
France
Prior art keywords
talking machines
talking
machines
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.)
Parlophone Records Ltd
Original Assignee
Gramophone Co Ltd
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 Gramophone Co Ltd filed Critical Gramophone Co Ltd
Application granted granted Critical
Publication of FR452994A publication Critical patent/FR452994A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR452994D 1912-09-14 1913-01-09 Perfectionnements aux machines parlantes Expired FR452994A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE452994X 1912-09-14

Publications (1)

Publication Number Publication Date
FR452994A true FR452994A (fr) 1913-05-28

Family

ID=1493145

Family Applications (1)

Application Number Title Priority Date Filing Date
FR452994D Expired FR452994A (fr) 1912-09-14 1913-01-09 Perfectionnements aux machines parlantes

Country Status (1)

Country Link
FR (1) FR452994A (fr)

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