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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1762102X | 1927-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL21316C true NL21316C (en) |
Family
ID=7742223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL21316D NL21316C (en) | 1927-05-07 |
Country Status (2)
Country | Link |
---|---|
US (1) | US1762102A (en) |
NL (1) | NL21316C (en) |
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0
- NL NL21316D patent/NL21316C/xx active
-
1928
- 1928-04-18 US US271006A patent/US1762102A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US1762102A (en) | 1930-06-03 |