DE201208C - - Google Patents

Info

Publication number
DE201208C
DE201208C DENDAT201208D DE201208DA DE201208C DE 201208 C DE201208 C DE 201208C DE NDAT201208 D DENDAT201208 D DE NDAT201208D DE 201208D A DE201208D A DE 201208DA DE 201208 C DE201208 C DE 201208C
Authority
DE
Germany
Prior art keywords
water
electromagnetically
membrane
sound waves
generated sound
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
DENDAT201208D
Other languages
German (de)
English (en)
Publication of DE201208C publication Critical patent/DE201208C/de
Active 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)
DENDAT201208D Active DE201208C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE201208C true DE201208C (enrdf_load_stackoverflow)

Family

ID=463781

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT201208D Active DE201208C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE201208C (enrdf_load_stackoverflow)

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