FR514964A - Appareil d'écoute sous-marine - Google Patents

Appareil d'écoute sous-marine

Info

Publication number
FR514964A
FR514964A FR514964A FR514964DA FR514964A FR 514964 A FR514964 A FR 514964A FR 514964 A FR514964 A FR 514964A FR 514964D A FR514964D A FR 514964DA FR 514964 A FR514964 A FR 514964A
Authority
FR
France
Prior art keywords
listening device
underwater listening
underwater
listening
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
FR514964A
Other languages
English (en)
Inventor
Georges Walser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR514964A publication Critical patent/FR514964A/fr
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)
FR514964A 1917-07-28 1917-07-28 Appareil d'écoute sous-marine Expired FR514964A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR514964T 1917-07-28

Publications (1)

Publication Number Publication Date
FR514964A true FR514964A (fr) 1921-03-22

Family

ID=8914466

Family Applications (1)

Application Number Title Priority Date Filing Date
FR514964A Expired FR514964A (fr) 1917-07-28 1917-07-28 Appareil d'écoute sous-marine

Country Status (1)

Country Link
FR (1) FR514964A (fr)

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