FR1405328A - Improvements to electrodynamic sirens - Google Patents

Improvements to electrodynamic sirens

Info

Publication number
FR1405328A
FR1405328A FR975900A FR975900A FR1405328A FR 1405328 A FR1405328 A FR 1405328A FR 975900 A FR975900 A FR 975900A FR 975900 A FR975900 A FR 975900A FR 1405328 A FR1405328 A FR 1405328A
Authority
FR
France
Prior art keywords
sirens
electrodynamic
electrodynamic sirens
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
FR975900A
Other languages
French (fr)
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.)
Materiel Electrique SW SA
Original Assignee
Materiel Electrique SW SA
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 Materiel Electrique SW SA filed Critical Materiel Electrique SW SA
Priority to FR975900A priority Critical patent/FR1405328A/en
Application granted granted Critical
Publication of FR1405328A publication Critical patent/FR1405328A/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
    • G10K7/00—Sirens
    • G10K7/02—Sirens in which the sound-producing member is rotated manually or by a motor
    • G10K7/04—Sirens in which the sound-producing member is rotated manually or by a motor by an electric motor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR975900A 1964-05-26 1964-05-26 Improvements to electrodynamic sirens Expired FR1405328A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR975900A FR1405328A (en) 1964-05-26 1964-05-26 Improvements to electrodynamic sirens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR975900A FR1405328A (en) 1964-05-26 1964-05-26 Improvements to electrodynamic sirens

Publications (1)

Publication Number Publication Date
FR1405328A true FR1405328A (en) 1965-07-09

Family

ID=8830905

Family Applications (1)

Application Number Title Priority Date Filing Date
FR975900A Expired FR1405328A (en) 1964-05-26 1964-05-26 Improvements to electrodynamic sirens

Country Status (1)

Country Link
FR (1) FR1405328A (en)

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