NL21316C - - Google Patents

Info

Publication number
NL21316C
NL21316C NL21316DA NL21316C NL 21316 C NL21316 C NL 21316C NL 21316D A NL21316D A NL 21316DA NL 21316 C NL21316 C NL 21316C
Authority
NL
Netherlands
Application number
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.)
Publication of NL21316C publication Critical patent/NL21316C/xx

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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
NL21316D 1927-05-07 NL21316C (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1762102X 1927-05-07

Publications (1)

Publication Number Publication Date
NL21316C true NL21316C (ja)

Family

ID=7742223

Family Applications (1)

Application Number Title Priority Date Filing Date
NL21316D NL21316C (ja) 1927-05-07

Country Status (2)

Country Link
US (1) US1762102A (ja)
NL (1) NL21316C (ja)

Also Published As

Publication number Publication date
US1762102A (en) 1930-06-03

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