DE223356C - - Google Patents

Info

Publication number
DE223356C
DE223356C DENDAT223356D DE223356DA DE223356C DE 223356 C DE223356 C DE 223356C DE NDAT223356 D DENDAT223356 D DE NDAT223356D DE 223356D A DE223356D A DE 223356DA DE 223356 C DE223356 C DE 223356C
Authority
DE
Germany
Prior art keywords
air
sound
water
vibrations
microphone
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.)
Active
Application number
DENDAT223356D
Other languages
German (de)
English (en)
Publication of DE223356C publication Critical patent/DE223356C/de
Active legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S1/00Beacons 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
    • G01S1/72Beacons 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)
DENDAT223356D Active DE223356C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE282597T

Publications (1)

Publication Number Publication Date
DE223356C true DE223356C (enrdf_load_stackoverflow)

Family

ID=6041724

Family Applications (2)

Application Number Title Priority Date Filing Date
DENDAT223356D Active DE223356C (enrdf_load_stackoverflow)
DENDAT282597D Active DE282597C (enrdf_load_stackoverflow)

Family Applications After (1)

Application Number Title Priority Date Filing Date
DENDAT282597D Active DE282597C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (2) DE282597C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495730A (en) * 1943-11-12 1950-01-31 John M Ide Underwater sound generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495730A (en) * 1943-11-12 1950-01-31 John M Ide Underwater sound generator

Also Published As

Publication number Publication date
DE282597C (enrdf_load_stackoverflow)

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