FR22578E - Apparatus for discovering the approach and locating the direction of an underwater or aerial sound source - Google Patents

Apparatus for discovering the approach and locating the direction of an underwater or aerial sound source

Info

Publication number
FR22578E
FR22578E FR22578A FR22578DA FR22578E FR 22578 E FR22578 E FR 22578E FR 22578 A FR22578 A FR 22578A FR 22578D A FR22578D A FR 22578DA FR 22578 E FR22578 E FR 22578E
Authority
FR
France
Prior art keywords
discovering
underwater
locating
approach
sound source
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
FR22578A
Other languages
French (fr)
Inventor
Pierre Le Goaziou
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.)
PIERRE LE GOAZIOU
Original Assignee
PIERRE LE GOAZIOU
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 PIERRE LE GOAZIOU filed Critical PIERRE LE GOAZIOU
Application granted granted Critical
Publication of FR22578E publication Critical patent/FR22578E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
FR22578A 1919-01-27 1919-01-27 Apparatus for discovering the approach and locating the direction of an underwater or aerial sound source Expired FR22578E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR22578T 1919-01-27

Publications (1)

Publication Number Publication Date
FR22578E true FR22578E (en) 1921-07-23

Family

ID=8661428

Family Applications (1)

Application Number Title Priority Date Filing Date
FR22578A Expired FR22578E (en) 1919-01-27 1919-01-27 Apparatus for discovering the approach and locating the direction of an underwater or aerial sound source

Country Status (1)

Country Link
FR (1) FR22578E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056465A2 (en) * 1980-12-23 1982-07-28 The Wellcome Foundation Limited Pyrazoline derivatives, processes for their preparation and pharmaceutical formulations containing them

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0056465A2 (en) * 1980-12-23 1982-07-28 The Wellcome Foundation Limited Pyrazoline derivatives, processes for their preparation and pharmaceutical formulations containing them

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