FR837404A - Modulator for warning devices - Google Patents

Modulator for warning devices

Info

Publication number
FR837404A
FR837404A FR837404DA FR837404A FR 837404 A FR837404 A FR 837404A FR 837404D A FR837404D A FR 837404DA FR 837404 A FR837404 A FR 837404A
Authority
FR
France
Prior art keywords
modulator
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)
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.)
Mitton & Cie
Original Assignee
Mitton & Cie
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 Mitton & Cie filed Critical Mitton & Cie
Application granted granted Critical
Publication of FR837404A publication Critical patent/FR837404A/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
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR837404D 1937-05-01 1938-04-30 Modulator for warning devices Expired FR837404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE837404X 1937-05-01

Publications (1)

Publication Number Publication Date
FR837404A true FR837404A (en) 1939-02-09

Family

ID=3881880

Family Applications (1)

Application Number Title Priority Date Filing Date
FR837404D Expired FR837404A (en) 1937-05-01 1938-04-30 Modulator for warning devices

Country Status (1)

Country Link
FR (1) FR837404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751865A (en) * 1952-09-23 1956-06-26 Deere & Co Transplanter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751865A (en) * 1952-09-23 1956-06-26 Deere & Co Transplanter

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