FR562248A - Underwater listening device device with water chamber allowing the device to be applied directly against the plating of ships - Google Patents

Underwater listening device device with water chamber allowing the device to be applied directly against the plating of ships

Info

Publication number
FR562248A
FR562248A FR562248DA FR562248A FR 562248 A FR562248 A FR 562248A FR 562248D A FR562248D A FR 562248DA FR 562248 A FR562248 A FR 562248A
Authority
FR
France
Prior art keywords
ships
plating
applied directly
water chamber
directly against
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)
Inventor
Henri Brillie
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 filed Critical
Application granted granted Critical
Publication of FR562248A publication Critical patent/FR562248A/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)
FR562248D 1922-04-11 1922-04-11 Underwater listening device device with water chamber allowing the device to be applied directly against the plating of ships Expired FR562248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR562248T 1922-04-11

Publications (1)

Publication Number Publication Date
FR562248A true FR562248A (en) 1923-11-07

Family

ID=8944162

Family Applications (1)

Application Number Title Priority Date Filing Date
FR562248D Expired FR562248A (en) 1922-04-11 1922-04-11 Underwater listening device device with water chamber allowing the device to be applied directly against the plating of ships

Country Status (1)

Country Link
FR (1) FR562248A (en)

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