FR656979A - émetteur acoustique applicable notamment à la signalisation sousmarine - Google Patents

émetteur acoustique applicable notamment à la signalisation sousmarine

Info

Publication number
FR656979A
FR656979A FR656979DA FR656979A FR 656979 A FR656979 A FR 656979A FR 656979D A FR656979D A FR 656979DA FR 656979 A FR656979 A FR 656979A
Authority
FR
France
Prior art keywords
acoustic transmitter
underwater signaling
transmitter applicable
applicable
underwater
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
English (en)
French (fr)
Inventor
William Louis Walker
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 FR656979A publication Critical patent/FR656979A/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)
  • Reciprocating Pumps (AREA)
  • Special Spraying Apparatus (AREA)
FR656979D 1928-06-28 1928-07-04 émetteur acoustique applicable notamment à la signalisation sousmarine Expired FR656979A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1880428A GB319084A (en) 1928-06-28 1928-06-28 Improvements in sound transmitter

Publications (1)

Publication Number Publication Date
FR656979A true FR656979A (fr) 1929-05-17

Family

ID=10118701

Family Applications (1)

Application Number Title Priority Date Filing Date
FR656979D Expired FR656979A (fr) 1928-06-28 1928-07-04 émetteur acoustique applicable notamment à la signalisation sousmarine

Country Status (4)

Country Link
DE (1) DE485478C (instruction)
FR (1) FR656979A (instruction)
GB (1) GB319084A (instruction)
NL (1) NL29670C (instruction)

Also Published As

Publication number Publication date
DE485478C (de) 1929-11-15
NL29670C (instruction)
GB319084A (en) 1929-09-19

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