FR348973A - Sirène centrifuge à boites tournantes - Google Patents

Sirène centrifuge à boites tournantes

Info

Publication number
FR348973A
FR348973A FR348973DA FR348973A FR 348973 A FR348973 A FR 348973A FR 348973D A FR348973D A FR 348973DA FR 348973 A FR348973 A FR 348973A
Authority
FR
France
Prior art keywords
siren
centrifugal
rotating boxes
boxes
rotating
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
Luigi Guglielmo Molteni
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.)
LUIGI GUGLIELMO MOLTENI
Original Assignee
LUIGI GUGLIELMO MOLTENI
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 LUIGI GUGLIELMO MOLTENI filed Critical LUIGI GUGLIELMO MOLTENI
Application granted granted Critical
Publication of FR348973A publication Critical patent/FR348973A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR348973D 1903-12-04 1904-12-03 Sirène centrifuge à boites tournantes Expired FR348973A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT348973X 1903-12-04

Publications (1)

Publication Number Publication Date
FR348973A true FR348973A (fr) 1905-05-05

Family

ID=1397508

Family Applications (1)

Application Number Title Priority Date Filing Date
FR348973D Expired FR348973A (fr) 1903-12-04 1904-12-03 Sirène centrifuge à boites tournantes

Country Status (1)

Country Link
FR (1) FR348973A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528515A (en) * 1946-01-04 1950-11-07 Specialties Dev Corp Siren

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528515A (en) * 1946-01-04 1950-11-07 Specialties Dev Corp Siren

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