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
  • G01S1/02—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 radio waves

Applications Claiming Priority (1)

Publications (1)

Family

ID=5867521

Family Applications (1)

Country Status (5)

Families Citing this family (1)

• 0
  • BE BE431681D patent/BE431681A/xx unknown
  • NL NL52439D patent/NL52439C/xx active
  • BE BE131681D patent/BE131681A/xx unknown
• 1938
  • 1938-12-03 CH CH228970D patent/CH228970A/de unknown
  • 1938-12-07 US US244440A patent/US2241907A/en not_active Expired - Lifetime
  • 1938-12-14 FR FR847558D patent/FR847558A/fr not_active Expired

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