BE389023A - - Google Patents

Info

Publication number
BE389023A
BE389023A BE389023DA BE389023A BE 389023 A BE389023 A BE 389023A BE 389023D A BE389023D A BE 389023DA BE 389023 A BE389023 A BE 389023A
Authority
BE
Belgium
Prior art keywords
warning
cylinder
arms
desc
movements
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE389023A publication Critical patent/BE389023A/fr

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Emergency Alarm Devices (AREA)
BE389023D BE389023A (enExample)

Publications (1)

Publication Number Publication Date
BE389023A true BE389023A (enExample)

Family

ID=57208

Family Applications (1)

Application Number Title Priority Date Filing Date
BE389023D BE389023A (enExample)

Country Status (1)

Country Link
BE (1) BE389023A (enExample)

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