FR475763A - Avertisseur parlant - Google Patents

Avertisseur parlant

Info

Publication number
FR475763A
FR475763A FR475763DA FR475763A FR 475763 A FR475763 A FR 475763A FR 475763D A FR475763D A FR 475763DA FR 475763 A FR475763 A FR 475763A
Authority
FR
France
Prior art keywords
horn
speaking
speaking horn
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
Charles-Frederic-Leon Barbier
Leon-Adolphe Lelievre
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.)
CHARLES FREDERIC LEON BARBIER
LEON ADOLPHE LELIEVRE
Original Assignee
CHARLES FREDERIC LEON BARBIER
LEON ADOLPHE LELIEVRE
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 CHARLES FREDERIC LEON BARBIER, LEON ADOLPHE LELIEVRE filed Critical CHARLES FREDERIC LEON BARBIER
Application granted granted Critical
Publication of FR475763A publication Critical patent/FR475763A/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
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR475763D 1914-03-16 1914-03-16 Avertisseur parlant Expired FR475763A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR475763T 1914-03-16

Publications (1)

Publication Number Publication Date
FR475763A true FR475763A (fr) 1915-06-14

Family

ID=1513624

Family Applications (1)

Application Number Title Priority Date Filing Date
FR475763D Expired FR475763A (fr) 1914-03-16 1914-03-16 Avertisseur parlant

Country Status (1)

Country Link
FR (1) FR475763A (fr)

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