FR638717A - émetteur sonore - Google Patents

émetteur sonore

Info

Publication number
FR638717A
FR638717A FR638717DA FR638717A FR 638717 A FR638717 A FR 638717A FR 638717D A FR638717D A FR 638717DA FR 638717 A FR638717 A FR 638717A
Authority
FR
France
Prior art keywords
sound transmitter
transmitter
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
English (en)
Inventor
Jacques-Charles-Edmo De G Herv
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 FR638717A publication Critical patent/FR638717A/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
    • G10K7/00—Sirens

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR638717D 1927-08-02 1927-08-02 émetteur sonore Expired FR638717A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR638717T 1927-08-02

Publications (1)

Publication Number Publication Date
FR638717A true FR638717A (fr) 1928-06-01

Family

ID=8996210

Family Applications (1)

Application Number Title Priority Date Filing Date
FR638717D Expired FR638717A (fr) 1927-08-02 1927-08-02 émetteur sonore

Country Status (1)

Country Link
FR (1) FR638717A (fr)

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