BE365250A - - Google Patents

Info

Publication number
BE365250A
BE365250A BE365250DA BE365250A BE 365250 A BE365250 A BE 365250A BE 365250D A BE365250D A BE 365250DA BE 365250 A BE365250 A BE 365250A
Authority
BE
Belgium
Prior art keywords
sound
light
heat
instrument
indicating
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE365250A publication Critical patent/BE365250A/fr

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 Mechanical Vibrations Or Ultrasonic Waves (AREA)
BE365250D BE365250A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
BE365250A true BE365250A (enrdf_load_html_response)

Family

ID=37579

Family Applications (1)

Application Number Title Priority Date Filing Date
BE365250D BE365250A (enrdf_load_html_response)

Country Status (1)

Country Link
BE (1) BE365250A (enrdf_load_html_response)

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