FR757826A - Improvements to valves for sound devices - Google Patents

Improvements to valves for sound devices

Info

Publication number
FR757826A
FR757826A FR757826DA FR757826A FR 757826 A FR757826 A FR 757826A FR 757826D A FR757826D A FR 757826DA FR 757826 A FR757826 A FR 757826A
Authority
FR
France
Prior art keywords
valves
sound devices
sound
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)
Inventor
Andre-Jean-Fernand Marandet
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 FR757826A publication Critical patent/FR757826A/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
    • G10K9/04—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 by compressed gases, e.g. compressed air
FR757826D 1933-07-01 1933-07-01 Improvements to valves for sound devices Expired FR757826A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR757826T 1933-07-01

Publications (1)

Publication Number Publication Date
FR757826A true FR757826A (en) 1934-01-05

Family

ID=9166343

Family Applications (1)

Application Number Title Priority Date Filing Date
FR757826D Expired FR757826A (en) 1933-07-01 1933-07-01 Improvements to valves for sound devices

Country Status (1)

Country Link
FR (1) FR757826A (en)

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