FR870892A - Sifflet commandé par soupape, applicable notamment aux sondages par écho - Google Patents

Sifflet commandé par soupape, applicable notamment aux sondages par écho

Info

Publication number
FR870892A
FR870892A FR870892DA FR870892A FR 870892 A FR870892 A FR 870892A FR 870892D A FR870892D A FR 870892DA FR 870892 A FR870892 A FR 870892A
Authority
FR
France
Prior art keywords
whistle
particularly applicable
valve controlled
echo soundings
soundings
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)
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Application granted granted Critical
Publication of FR870892A publication Critical patent/FR870892A/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
    • G10K5/00—Whistles

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Safety Valves (AREA)
  • Details Of Valves (AREA)
FR870892D 1938-08-03 1939-08-02 Sifflet commandé par soupape, applicable notamment aux sondages par écho Expired FR870892A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA87690D DE758321C (de) 1938-08-03 1938-08-03 Ventilgesteuerte Pfeife, insbesondere fuer Echolotungen

Publications (1)

Publication Number Publication Date
FR870892A true FR870892A (fr) 1942-03-27

Family

ID=6950136

Family Applications (1)

Application Number Title Priority Date Filing Date
FR870892D Expired FR870892A (fr) 1938-08-03 1939-08-02 Sifflet commandé par soupape, applicable notamment aux sondages par écho

Country Status (3)

Country Link
CH (1) CH217095A (fr)
DE (1) DE758321C (fr)
FR (1) FR870892A (fr)

Also Published As

Publication number Publication date
DE758321C (de) 1954-04-12
CH217095A (de) 1941-09-30

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