FR550969A - Electric cone - Google Patents

Electric cone

Info

Publication number
FR550969A
FR550969A FR550969DA FR550969A FR 550969 A FR550969 A FR 550969A FR 550969D A FR550969D A FR 550969DA FR 550969 A FR550969 A FR 550969A
Authority
FR
France
Prior art keywords
electric cone
cone
electric
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)
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.)
HEINZE ELECTRIC Co
Original Assignee
HEINZE ELECTRIC Co
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 HEINZE ELECTRIC Co filed Critical HEINZE ELECTRIC Co
Application granted granted Critical
Publication of FR550969A publication Critical patent/FR550969A/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
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR550969D 1922-01-09 1922-05-04 Electric cone Expired FR550969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US550969XA 1922-01-09 1922-01-09

Publications (1)

Publication Number Publication Date
FR550969A true FR550969A (en) 1923-03-24

Family

ID=21995566

Family Applications (1)

Application Number Title Priority Date Filing Date
FR550969D Expired FR550969A (en) 1922-01-09 1922-05-04 Electric cone

Country Status (1)

Country Link
FR (1) FR550969A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461320A1 (en) * 1979-07-13 1981-01-30 Lectron Products SOUND GENERATOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2461320A1 (en) * 1979-07-13 1981-01-30 Lectron Products SOUND GENERATOR

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