FR615609A - Double acoustic tube for airplanes and other applications - Google Patents

Double acoustic tube for airplanes and other applications

Info

Publication number
FR615609A
FR615609A FR615609DA FR615609A FR 615609 A FR615609 A FR 615609A FR 615609D A FR615609D A FR 615609DA FR 615609 A FR615609 A FR 615609A
Authority
FR
France
Prior art keywords
airplanes
applications
acoustic tube
double acoustic
double
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)
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.)
AERA ETS
Original Assignee
AERA ETS
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 AERA ETS filed Critical AERA ETS
Application granted granted Critical
Publication of FR615609A publication Critical patent/FR615609A/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
    • 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR615609D 1926-05-04 1926-05-04 Double acoustic tube for airplanes and other applications Expired FR615609A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR615609T 1926-05-04

Publications (1)

Publication Number Publication Date
FR615609A true FR615609A (en) 1927-01-12

Family

ID=8981031

Family Applications (1)

Application Number Title Priority Date Filing Date
FR615609D Expired FR615609A (en) 1926-05-04 1926-05-04 Double acoustic tube for airplanes and other applications

Country Status (1)

Country Link
FR (1) FR615609A (en)

Similar Documents

Publication Publication Date Title
FR615609A (en) Double acoustic tube for airplanes and other applications
FR625586A (en) Can
FR663736A (en) Tubes for pasta and other applications
SU4137A1 (en) Aircraft
FR633431A (en) Differential refractometer
FR622040A (en) Shear
FR617144A (en) Airplane
FR626977A (en) Biplane type airplane
FR31694E (en) Gyrostatic coupler
FR615755A (en) Aircraft cinemodivometer
FR633147A (en) Mustard
FR637298A (en) Aircraft stabilizer
FR618806A (en) Airplane sight
FR637105A (en) Aviation signal rocket
FR638334A (en) Improvements to diaphragms for phonographs and other applications
FR635688A (en) Acoustic diaphragms
FR625998A (en) Gyrostatic coupler
FR638834A (en) oven for disinfection and other applications
FR627089A (en) Thruster
FI11072A (en) Trycksmörjapparat
FI11123A (en) Högtrycksångpanneanläggning
FI11054A (en) Järnvägsbuffert
FI11056A (en) Elektriskt säkerhetsstycke
FI11067A (en) Ångmätare
FI11035A (en) Sträckverk