FR378375A - Sirène électro-magnétique - Google Patents

Sirène électro-magnétique

Info

Publication number
FR378375A
FR378375A FR378375DA FR378375A FR 378375 A FR378375 A FR 378375A FR 378375D A FR378375D A FR 378375DA FR 378375 A FR378375 A FR 378375A
Authority
FR
France
Prior art keywords
siren
electro
magnetic
magnetic siren
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
Edouard Blum
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR378375A publication Critical patent/FR378375A/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
    • G10K9/10—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by mechanical means only

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR378375D 1907-05-31 1907-05-31 Sirène électro-magnétique Expired FR378375A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR378375T 1907-05-31

Publications (1)

Publication Number Publication Date
FR378375A true FR378375A (fr) 1907-10-03

Family

ID=1424732

Family Applications (1)

Application Number Title Priority Date Filing Date
FR378375D Expired FR378375A (fr) 1907-05-31 1907-05-31 Sirène électro-magnétique

Country Status (1)

Country Link
FR (1) FR378375A (fr)

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