BE441728A - - Google Patents
Info
- Publication number
- BE441728A BE441728A BE441728DA BE441728A BE 441728 A BE441728 A BE 441728A BE 441728D A BE441728D A BE 441728DA BE 441728 A BE441728 A BE 441728A
- Authority
- BE
- Belgium
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
- G01S1/02—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
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)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2980539A GB536377A (en) | 1939-11-10 | 1939-11-10 | Improvements in or relating to direction finding systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE441728A true BE441728A (US07321065-20080122-C00020.png) |
Family
ID=10297437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441728D BE441728A (US07321065-20080122-C00020.png) | 1939-11-10 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE441728A (US07321065-20080122-C00020.png) |
| FR (1) | FR867848A (US07321065-20080122-C00020.png) |
| GB (1) | GB536377A (US07321065-20080122-C00020.png) |
-
0
- BE BE441728D patent/BE441728A/xx unknown
-
1939
- 1939-11-10 GB GB2980539A patent/GB536377A/en not_active Expired
-
1940
- 1940-11-29 FR FR867848D patent/FR867848A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB536377A (en) | 1941-05-13 |
| FR867848A (fr) | 1941-11-29 |
