FR2170774A5 - - Google Patents

Info

Publication number
FR2170774A5
FR2170774A5 FR7303831A FR7303831A FR2170774A5 FR 2170774 A5 FR2170774 A5 FR 2170774A5 FR 7303831 A FR7303831 A FR 7303831A FR 7303831 A FR7303831 A FR 7303831A FR 2170774 A5 FR2170774 A5 FR 2170774A5
Authority
FR
France
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
FR7303831A
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.)
FRIGO DOMENICO IT
Original Assignee
FRIGO DOMENICO IT
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 FRIGO DOMENICO IT filed Critical FRIGO DOMENICO IT
Application granted granted Critical
Publication of FR2170774A5 publication Critical patent/FR2170774A5/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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR7303831A 1972-02-03 1973-02-02 Expired FR2170774A5 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT4151772A IT962067B (it) 1972-02-03 1972-02-03 Avvisatore acustico pneumatico od elettrico bi o pluritonale con cornetti accoppiati costituenti un blocco unico

Publications (1)

Publication Number Publication Date
FR2170774A5 true FR2170774A5 (enExample) 1973-09-14

Family

ID=11250506

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7303831A Expired FR2170774A5 (enExample) 1972-02-03 1973-02-02

Country Status (3)

Country Link
BR (1) BR7300794D0 (enExample)
FR (1) FR2170774A5 (enExample)
IT (1) IT962067B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2147701A2 (es) * 1997-02-10 2000-09-16 Bosch Gmbh Robert Claxon electromagnetico.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007703A (en) * 1976-02-27 1977-02-15 F.I.A.M.M. Fabbrica Italiana Accumulatori Motocarri Montecchio S.P.A. Two-tone sound generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2147701A2 (es) * 1997-02-10 2000-09-16 Bosch Gmbh Robert Claxon electromagnetico.

Also Published As

Publication number Publication date
BR7300794D0 (pt) 1973-10-09
IT962067B (it) 1973-12-20

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Legal Events

Date Code Title Description
ST Notification of lapse