FR500235A - Devices for receiving apparatus for underwater signals - Google Patents

Devices for receiving apparatus for underwater signals

Info

Publication number
FR500235A
FR500235A FR500235A FR500235DA FR500235A FR 500235 A FR500235 A FR 500235A FR 500235 A FR500235 A FR 500235A FR 500235D A FR500235D A FR 500235DA FR 500235 A FR500235 A FR 500235A
Authority
FR
France
Prior art keywords
devices
receiving apparatus
underwater signals
underwater
signals
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
FR500235A
Other languages
French (fr)
Inventor
Axel Uno Saernmark
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 FR500235A publication Critical patent/FR500235A/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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
FR500235A 1918-02-07 1919-04-12 Devices for receiving apparatus for underwater signals Expired FR500235A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE123317X 1918-02-07

Publications (1)

Publication Number Publication Date
FR500235A true FR500235A (en) 1920-03-05

Family

ID=32390994

Family Applications (1)

Application Number Title Priority Date Filing Date
FR500235A Expired FR500235A (en) 1918-02-07 1919-04-12 Devices for receiving apparatus for underwater signals

Country Status (2)

Country Link
FR (1) FR500235A (en)
GB (1) GB123317A (en)

Also Published As

Publication number Publication date
GB123317A (en) 1919-10-09

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