FR38827E - Avertisseur sonore - Google Patents

Avertisseur sonore

Info

Publication number
FR38827E
FR38827E FR38827DA FR38827E FR 38827 E FR38827 E FR 38827E FR 38827D A FR38827D A FR 38827DA FR 38827 E FR38827 E FR 38827E
Authority
FR
France
Prior art keywords
buzzer
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)
Inventor
Gentilhomme
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 FR38827E publication Critical patent/FR38827E/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
    • 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)
FR38827D 1929-10-31 1929-10-31 Avertisseur sonore Expired FR38827E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR38827T 1929-10-31

Publications (1)

Publication Number Publication Date
FR38827E true FR38827E (fr) 1931-07-31

Family

ID=8675288

Family Applications (1)

Application Number Title Priority Date Filing Date
FR38827D Expired FR38827E (fr) 1929-10-31 1929-10-31 Avertisseur sonore

Country Status (1)

Country Link
FR (1) FR38827E (fr)

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