BE131681A - - Google Patents

Info

Publication number
BE131681A
BE131681A BE131681DA BE131681A BE 131681 A BE131681 A BE 131681A BE 131681D A BE131681D A BE 131681DA BE 131681 A BE131681 A BE 131681A
Authority
BE
Belgium
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 BE131681A publication Critical patent/BE131681A/xx

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
    • G01S1/02Beacons 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 radio 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)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
BE131681D 1938-06-07 BE131681A (ko)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE228970X 1938-06-07

Publications (1)

Publication Number Publication Date
BE131681A true BE131681A (ko)

Family

ID=5867521

Family Applications (2)

Application Number Title Priority Date Filing Date
BE131681D BE131681A (ko) 1938-06-07
BE431681D BE431681A (ko) 1938-06-07

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE431681D BE431681A (ko) 1938-06-07

Country Status (5)

Country Link
US (1) US2241907A (ko)
BE (2) BE431681A (ko)
CH (1) CH228970A (ko)
FR (1) FR847558A (ko)
NL (1) NL52439C (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2536112A (en) * 1943-11-22 1951-01-02 Sperry Corp Aircraft landing system

Also Published As

Publication number Publication date
NL52439C (ko)
BE431681A (ko)
FR847558A (fr) 1939-10-12
US2241907A (en) 1941-05-13
CH228970A (de) 1943-09-30

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