FR1133652A - advanced ultrasonic transmitter - Google Patents

advanced ultrasonic transmitter

Info

Publication number
FR1133652A
FR1133652A FR1133652DA FR1133652A FR 1133652 A FR1133652 A FR 1133652A FR 1133652D A FR1133652D A FR 1133652DA FR 1133652 A FR1133652 A FR 1133652A
Authority
FR
France
Prior art keywords
ultrasonic transmitter
advanced ultrasonic
advanced
transmitter
ultrasonic
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)
Inventor
Jacques-Marie-Noel Hanlet
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.)
CEDEL CT D ETUDES ET DE DEV DE
Original Assignee
CEDEL CT D ETUDES ET DE DEV DE
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 CEDEL CT D ETUDES ET DE DEV DE filed Critical CEDEL CT D ETUDES ET DE DEV DE
Application granted granted Critical
Publication of FR1133652A publication Critical patent/FR1133652A/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
    • 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
    • G10K7/005—Ultrasonic sirens

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR1133652D 1955-10-13 1955-10-13 advanced ultrasonic transmitter Expired FR1133652A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1133652T 1955-10-13

Publications (1)

Publication Number Publication Date
FR1133652A true FR1133652A (en) 1957-04-01

Family

ID=9638975

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1133652D Expired FR1133652A (en) 1955-10-13 1955-10-13 advanced ultrasonic transmitter

Country Status (1)

Country Link
FR (1) FR1133652A (en)

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