FR43764E - Avertisseur sonore - Google Patents

Avertisseur sonore

Info

Publication number
FR43764E
FR43764E FR43764DA FR43764E FR 43764 E FR43764 E FR 43764E FR 43764D A FR43764D A FR 43764DA FR 43764 E FR43764 E FR 43764E
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 FR43764E publication Critical patent/FR43764E/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
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated
    • G10K9/04—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated by compressed gases, e.g. compressed air

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR43764D 1933-05-02 1933-05-02 Avertisseur sonore Expired FR43764E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR43764T 1933-05-02

Publications (1)

Publication Number Publication Date
FR43764E true FR43764E (fr) 1934-08-30

Family

ID=8679698

Family Applications (1)

Application Number Title Priority Date Filing Date
FR43764D Expired FR43764E (fr) 1933-05-02 1933-05-02 Avertisseur sonore

Country Status (1)

Country Link
FR (1) FR43764E (fr)

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