FR525948A - Improvements to acoustic devices for underwater acoustic signals - Google Patents

Improvements to acoustic devices for underwater acoustic signals

Info

Publication number
FR525948A
FR525948A FR525948A FR525948DA FR525948A FR 525948 A FR525948 A FR 525948A FR 525948 A FR525948 A FR 525948A FR 525948D A FR525948D A FR 525948DA FR 525948 A FR525948 A FR 525948A
Authority
FR
France
Prior art keywords
acoustic
devices
underwater
signals
acoustic 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
FR525948A
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 FR525948A publication Critical patent/FR525948A/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)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Load-Engaging Elements For Cranes (AREA)
FR525948A 1918-07-12 1920-07-10 Improvements to acoustic devices for underwater acoustic signals Expired FR525948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE350962T 1918-07-12

Publications (1)

Publication Number Publication Date
FR525948A true FR525948A (en) 1921-09-29

Family

ID=33480552

Family Applications (2)

Application Number Title Priority Date Filing Date
FR24643A Expired FR24643E (en) 1918-07-12 1920-07-10 Improvements to acoustic devices for underwater acoustic signals
FR525948A Expired FR525948A (en) 1918-07-12 1920-07-10 Improvements to acoustic devices for underwater acoustic signals

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR24643A Expired FR24643E (en) 1918-07-12 1920-07-10 Improvements to acoustic devices for underwater acoustic signals

Country Status (4)

Country Link
DE (3) DE348126C (en)
FR (2) FR24643E (en)
GB (5) GB147938A (en)
NL (1) NL9274C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237451A (en) * 1962-10-16 1966-03-01 Acoustica Associates Inc Volumetric measurement system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4774143A (en) * 1985-12-31 1988-09-27 General Electric Company Impact resistant glass
RU2297477C2 (en) * 2004-02-17 2007-04-20 Всероссийский Научно-Исследовательский Институт По Переработке Лубяных Культур (Вниилк) Method for producing of bast-fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237451A (en) * 1962-10-16 1966-03-01 Acoustica Associates Inc Volumetric measurement system

Also Published As

Publication number Publication date
DE348126C (en) 1922-01-31
DE350961C (en) 1922-03-28
GB147935A (en) 1921-09-15
NL9274C (en) 1923-08-15
FR24643E (en) 1922-09-18
DE350962C (en) 1922-03-28
GB148415A (en) 1921-10-10
GB148411A (en) 1921-10-10
GB148413A (en) 1921-10-10
GB147938A (en) 1921-10-06

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