FR756055A - Système d'avertisseur sonore - Google Patents

Système d'avertisseur sonore

Info

Publication number
FR756055A
FR756055A FR756055DA FR756055A FR 756055 A FR756055 A FR 756055A FR 756055D A FR756055D A FR 756055DA FR 756055 A FR756055 A FR 756055A
Authority
FR
France
Prior art keywords
horn system
horn
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
Joseph Chambon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
L APP ELECTRO MECANIQUE
Original Assignee
L APP ELECTRO MECANIQUE
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 by L APP ELECTRO MECANIQUE filed Critical L APP ELECTRO MECANIQUE
Application granted granted Critical
Publication of FR756055A publication Critical patent/FR756055A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR756055D 1933-05-24 1933-05-24 Système d'avertisseur sonore Expired FR756055A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR756055T 1933-05-24

Publications (1)

Publication Number Publication Date
FR756055A true FR756055A (fr) 1933-12-04

Family

ID=9165374

Family Applications (1)

Application Number Title Priority Date Filing Date
FR756055D Expired FR756055A (fr) 1933-05-24 1933-05-24 Système d'avertisseur sonore

Country Status (1)

Country Link
FR (1) FR756055A (fr)

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