FR644191A - Improvements to warning devices for motor vehicles and various applications - Google Patents

Improvements to warning devices for motor vehicles and various applications

Info

Publication number
FR644191A
FR644191A FR644191DA FR644191A FR 644191 A FR644191 A FR 644191A FR 644191D A FR644191D A FR 644191DA FR 644191 A FR644191 A FR 644191A
Authority
FR
France
Prior art keywords
motor vehicles
various applications
warning devices
warning
devices
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
Joseph Bethenod
Hugues Goudet
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 FR644191A publication Critical patent/FR644191A/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
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR644191D 1927-04-21 1927-04-21 Improvements to warning devices for motor vehicles and various applications Expired FR644191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR644191T 1927-04-21

Publications (1)

Publication Number Publication Date
FR644191A true FR644191A (en) 1928-10-03

Family

ID=8999968

Family Applications (1)

Application Number Title Priority Date Filing Date
FR644191D Expired FR644191A (en) 1927-04-21 1927-04-21 Improvements to warning devices for motor vehicles and various applications

Country Status (1)

Country Link
FR (1) FR644191A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640981A (en) * 1949-02-24 1953-06-02 Thomas G Moulding Casing and sealing means for horns or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640981A (en) * 1949-02-24 1953-06-02 Thomas G Moulding Casing and sealing means for horns or the like

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