FR648307A - Acoustic case for amplifiers and sound recorders - Google Patents

Acoustic case for amplifiers and sound recorders

Info

Publication number
FR648307A
FR648307A FR648307DA FR648307A FR 648307 A FR648307 A FR 648307A FR 648307D A FR648307D A FR 648307DA FR 648307 A FR648307 A FR 648307A
Authority
FR
France
Prior art keywords
amplifiers
sound recorders
acoustic case
acoustic
case
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
William Midgley Campbell
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 FR648307A publication Critical patent/FR648307A/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)
FR648307D 1927-02-02 1928-02-01 Acoustic case for amplifiers and sound recorders Expired FR648307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA648307X 1927-02-02

Publications (1)

Publication Number Publication Date
FR648307A true FR648307A (en) 1928-12-07

Family

ID=4172061

Family Applications (1)

Application Number Title Priority Date Filing Date
FR648307D Expired FR648307A (en) 1927-02-02 1928-02-01 Acoustic case for amplifiers and sound recorders

Country Status (1)

Country Link
FR (1) FR648307A (en)

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