FR397581A - Sirens or mechanical horns - Google Patents

Sirens or mechanical horns

Info

Publication number
FR397581A
FR397581A FR397581DA FR397581A FR 397581 A FR397581 A FR 397581A FR 397581D A FR397581D A FR 397581DA FR 397581 A FR397581 A FR 397581A
Authority
FR
France
Prior art keywords
sirens
horns
mechanical
mechanical horns
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.)
SIRENO Co
Original Assignee
SIRENO Co
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 SIRENO Co filed Critical SIRENO Co
Application granted granted Critical
Publication of FR397581A publication Critical patent/FR397581A/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
    • 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)
FR397581D 1907-11-26 1908-11-24 Sirens or mechanical horns Expired FR397581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US397581XA 1907-11-26 1907-11-26

Publications (1)

Publication Number Publication Date
FR397581A true FR397581A (en) 1909-05-11

Family

ID=1442647

Family Applications (1)

Application Number Title Priority Date Filing Date
FR397581D Expired FR397581A (en) 1907-11-26 1908-11-24 Sirens or mechanical horns

Country Status (1)

Country Link
FR (1) FR397581A (en)

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