FR762248A - Improvements to audible warning devices - Google Patents

Improvements to audible warning devices

Info

Publication number
FR762248A
FR762248A FR762248DA FR762248A FR 762248 A FR762248 A FR 762248A FR 762248D A FR762248D A FR 762248DA FR 762248 A FR762248 A FR 762248A
Authority
FR
France
Prior art keywords
audible warning
warning devices
audible
devices
warning
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
Antonio Galbarini
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 FR762248A publication Critical patent/FR762248A/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
    • G10K9/02—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)
FR762248D 1933-10-07 1933-10-07 Improvements to audible warning devices Expired FR762248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR762248T 1933-10-07

Publications (1)

Publication Number Publication Date
FR762248A true FR762248A (en) 1934-04-07

Family

ID=9176052

Family Applications (1)

Application Number Title Priority Date Filing Date
FR762248D Expired FR762248A (en) 1933-10-07 1933-10-07 Improvements to audible warning devices

Country Status (1)

Country Link
FR (1) FR762248A (en)

Similar Documents

Publication Publication Date Title
FR777114A (en) Improvements to traction devices
FR771315A (en) Improvements to gauges
FR768373A (en) Improvements to acoustic devices
FR809083A (en) Improvements to audible warning devices
FR762248A (en) Improvements to audible warning devices
FR784769A (en) Improvements to audible warning devices
FR738369A (en) Improvements to audible warning devices
FR760417A (en) Improvements to audible warning devices
FR43729E (en) Improvements to audible warning devices
FR44582E (en) Improvements to audible warning devices
FR772191A (en) Improvements to sheet-filling devices
FR807916A (en) Improvements to audible warning devices
FR822415A (en) Improvements to audible warning devices
FR816552A (en) Improvements to audible warning devices
FR44538E (en) Improvements to extinguishers
FR767022A (en) Improvements to electromagnetic audible warning devices
FR771451A (en) Improvements to winding devices
FR724742A (en) Improvements to audible warning devices
FR806607A (en) Improvements to the speakers
FR755222A (en) Warning
FR776628A (en) Improvements to extinguishers
FR753196A (en) Improvements to extinguishers
FR776633A (en) Headquarters improvements
FR776682A (en) Improvements to tri-carriers
FR761354A (en) Improvements to jockstrap