FR701072A - Avertisseur sonore - Google Patents

Avertisseur sonore

Info

Publication number
FR701072A
FR701072A FR701072DA FR701072A FR 701072 A FR701072 A FR 701072A FR 701072D A FR701072D A FR 701072DA FR 701072 A FR701072 A FR 701072A
Authority
FR
France
Prior art keywords
buzzer
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
Gentilhomme
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 FR701072A publication Critical patent/FR701072A/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
    • G10K7/06—Sirens in which the sound-producing member is driven by a fluid, e.g. by a compressed gas

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR701072D 1929-10-01 1929-10-31 Avertisseur sonore Expired FR701072A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE701072X 1929-10-01

Publications (1)

Publication Number Publication Date
FR701072A true FR701072A (fr) 1931-03-11

Family

ID=3878359

Family Applications (1)

Application Number Title Priority Date Filing Date
FR701072D Expired FR701072A (fr) 1929-10-01 1929-10-31 Avertisseur sonore

Country Status (1)

Country Link
FR (1) FR701072A (fr)

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