FR459501A - membrane transmitter for underwater acoustic signals - Google Patents

membrane transmitter for underwater acoustic signals

Info

Publication number
FR459501A
FR459501A FR459501DA FR459501A FR 459501 A FR459501 A FR 459501A FR 459501D A FR459501D A FR 459501DA FR 459501 A FR459501 A FR 459501A
Authority
FR
France
Prior art keywords
acoustic signals
underwater acoustic
transmitter
membrane
membrane transmitter
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)
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.)
Signal GmbH
Original Assignee
Signal 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 Signal GmbH filed Critical Signal GmbH
Application granted granted Critical
Publication of FR459501A publication Critical patent/FR459501A/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)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
FR459501D 1912-06-24 1913-06-20 membrane transmitter for underwater acoustic signals Expired FR459501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE295925T 1912-06-24

Publications (1)

Publication Number Publication Date
FR459501A true FR459501A (en) 1913-11-07

Family

ID=32604625

Family Applications (1)

Application Number Title Priority Date Filing Date
FR459501D Expired FR459501A (en) 1912-06-24 1913-06-20 membrane transmitter for underwater acoustic signals

Country Status (3)

Country Link
DE (2) DE295925C (en)
FR (1) FR459501A (en)
GB (2) GB191314218A (en)

Also Published As

Publication number Publication date
DE347450C (en) 1922-01-20
DE295925C (en)
GB191314218A (en) 1914-07-20
GB148409A (en) 1921-10-10

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