FR684635A - Improvements to sound reproduction devices - Google Patents

Improvements to sound reproduction devices

Info

Publication number
FR684635A
FR684635A FR684635DA FR684635A FR 684635 A FR684635 A FR 684635A FR 684635D A FR684635D A FR 684635DA FR 684635 A FR684635 A FR 684635A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction devices
devices
sound
reproduction
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
Ignas Jurkunas-Scheynius
Henrik Kreuger
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 FR684635A publication Critical patent/FR684635A/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)
FR684635D 1928-11-09 1929-11-08 Improvements to sound reproduction devices Expired FR684635A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE684635X 1928-11-09

Publications (1)

Publication Number Publication Date
FR684635A true FR684635A (en) 1930-06-27

Family

ID=20315019

Family Applications (1)

Application Number Title Priority Date Filing Date
FR684635D Expired FR684635A (en) 1928-11-09 1929-11-08 Improvements to sound reproduction devices

Country Status (1)

Country Link
FR (1) FR684635A (en)

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