FR691560A - Improvements to sound reproducers - Google Patents

Improvements to sound reproducers

Info

Publication number
FR691560A
FR691560A FR691560DA FR691560A FR 691560 A FR691560 A FR 691560A FR 691560D A FR691560D A FR 691560DA FR 691560 A FR691560 A FR 691560A
Authority
FR
France
Prior art keywords
sound reproducers
reproducers
sound
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
Marcel Roche
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 FR691560A publication Critical patent/FR691560A/en
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)
FR691560D 1930-03-07 1930-03-07 Improvements to sound reproducers Expired FR691560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR691560T 1930-03-07

Publications (1)

Publication Number Publication Date
FR691560A true FR691560A (en) 1930-10-23

Family

ID=9034036

Family Applications (1)

Application Number Title Priority Date Filing Date
FR691560D Expired FR691560A (en) 1930-03-07 1930-03-07 Improvements to sound reproducers

Country Status (1)

Country Link
FR (1) FR691560A (en)

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