FR2157309A6 - - Google Patents

Info

Publication number
FR2157309A6
FR2157309A6 FR7226550A FR7226550A FR2157309A6 FR 2157309 A6 FR2157309 A6 FR 2157309A6 FR 7226550 A FR7226550 A FR 7226550A FR 7226550 A FR7226550 A FR 7226550A FR 2157309 A6 FR2157309 A6 FR 2157309A6
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
FR7226550A
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.)
Energy Sciences Inc
Original Assignee
Energy Sciences Inc
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
Priority claimed from US00189206A external-priority patent/US3831550A/en
Application filed by Energy Sciences Inc filed Critical Energy Sciences Inc
Application granted granted Critical
Publication of FR2157309A6 publication Critical patent/FR2157309A6/fr
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K5/00Whistles
    • G10K5/02Ultrasonic whistles

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR7226550A 1971-10-14 1972-07-24 Expired FR2157309A6 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00189206A US3831550A (en) 1970-11-02 1971-10-14 Sonic wave generation

Publications (1)

Publication Number Publication Date
FR2157309A6 true FR2157309A6 (enrdf_load_stackoverflow) 1973-06-01

Family

ID=22696376

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7226550A Expired FR2157309A6 (enrdf_load_stackoverflow) 1971-10-14 1972-07-24

Country Status (1)

Country Link
FR (1) FR2157309A6 (enrdf_load_stackoverflow)

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