BE474428A - - Google Patents
Info
- Publication number
- BE474428A BE474428A BE474428DA BE474428A BE 474428 A BE474428 A BE 474428A BE 474428D A BE474428D A BE 474428DA BE 474428 A BE474428 A BE 474428A
- 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
- G01S1/72—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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR934295T | 1946-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE474428A true BE474428A (en:Method) |
Family
ID=9456035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE474428D BE474428A (en:Method) | 1946-09-20 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE474428A (en:Method) |
| FR (1) | FR934295A (en:Method) |
-
0
- BE BE474428D patent/BE474428A/xx unknown
-
1946
- 1946-09-20 FR FR934295D patent/FR934295A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR934295A (fr) | 1948-05-18 |