FR481521A - Perfectionnements apportés aux machines parlantes - Google Patents

Perfectionnements apportés aux machines parlantes

Info

Publication number
FR481521A
FR481521A FR481521DA FR481521A FR 481521 A FR481521 A FR 481521A FR 481521D A FR481521D A FR 481521DA FR 481521 A FR481521 A FR 481521A
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)
Inventor
Eldridge Reeves Johnson
John Clifford English
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR481521A publication Critical patent/FR481521A/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)
FR481521D 1915-04-23 1916-04-17 Perfectionnements apportés aux machines parlantes Expired FR481521A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481521XA 1915-04-23 1915-04-23

Publications (1)

Publication Number Publication Date
FR481521A true FR481521A (fr) 1916-12-13

Family

ID=1518617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR481521D Expired FR481521A (fr) 1915-04-23 1916-04-17 Perfectionnements apportés aux machines parlantes

Country Status (1)

Country Link
FR (1) FR481521A (fr)

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