FR511200A - Appareil avertisseur sonore - Google Patents

Appareil avertisseur sonore

Info

Publication number
FR511200A
FR511200A FR511200A FR511200DA FR511200A FR 511200 A FR511200 A FR 511200A FR 511200 A FR511200 A FR 511200A FR 511200D A FR511200D A FR 511200DA FR 511200 A FR511200 A FR 511200A
Authority
FR
France
Prior art keywords
warning device
audible warning
audible
warning
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
FR511200A
Other languages
English (en)
Inventor
Louis Guichard
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR511200A publication Critical patent/FR511200A/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
    • G10K3/00—Rattles or like noise-producing devices, e.g. door-knockers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR511200A 1920-03-08 1920-03-08 Appareil avertisseur sonore Expired FR511200A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR511200T 1920-03-08

Publications (1)

Publication Number Publication Date
FR511200A true FR511200A (fr) 1920-12-18

Family

ID=8912227

Family Applications (1)

Application Number Title Priority Date Filing Date
FR511200A Expired FR511200A (fr) 1920-03-08 1920-03-08 Appareil avertisseur sonore

Country Status (1)

Country Link
FR (1) FR511200A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752082A1 (fr) * 1996-08-02 1998-02-06 Guicheman Laurent Dispositif de bruitage pour spectateurs de stades

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752082A1 (fr) * 1996-08-02 1998-02-06 Guicheman Laurent Dispositif de bruitage pour spectateurs de stades

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