FR746739A - Perfectionnement aux appareils avertisseurs pneumatiques - Google Patents

Perfectionnement aux appareils avertisseurs pneumatiques

Info

Publication number
FR746739A
FR746739A FR746739DA FR746739A FR 746739 A FR746739 A FR 746739A FR 746739D A FR746739D A FR 746739DA FR 746739 A FR746739 A FR 746739A
Authority
FR
France
Prior art keywords
further training
warning devices
pneumatic warning
pneumatic
training
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)
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.)
Ci Ind Et Commerciale Du Cycle Et De Lautomobile
Original Assignee
Ci Ind Et Commerciale Du Cycle Et De Lautomobile
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 Ci Ind Et Commerciale Du Cycle Et De Lautomobile filed Critical Ci Ind Et Commerciale Du Cycle Et De Lautomobile
Application granted granted Critical
Publication of FR746739A publication Critical patent/FR746739A/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
    • G10K9/02—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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR746739D 1932-12-03 1932-12-03 Perfectionnement aux appareils avertisseurs pneumatiques Expired FR746739A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR746739T 1932-12-03

Publications (1)

Publication Number Publication Date
FR746739A true FR746739A (fr) 1933-06-03

Family

ID=9147503

Family Applications (1)

Application Number Title Priority Date Filing Date
FR746739D Expired FR746739A (fr) 1932-12-03 1932-12-03 Perfectionnement aux appareils avertisseurs pneumatiques

Country Status (1)

Country Link
FR (1) FR746739A (fr)

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