BE471721A - - Google Patents
Info
- Publication number
- BE471721A BE471721A BE471721DA BE471721A BE 471721 A BE471721 A BE 471721A BE 471721D A BE471721D A BE 471721DA BE 471721 A BE471721 A BE 471721A
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US259497XA | 1946-03-29 | 1946-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE471721A true BE471721A (https=) | 1947-09-08 |
Family
ID=21828949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE471721D BE471721A (https=) | 1946-03-29 | 1947-03-08 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE471721A (https=) |
| CH (1) | CH259497A (https=) |
| FR (1) | FR942743A (https=) |
| NL (1) | NL66952C (https=) |
-
1947
- 1947-03-07 FR FR942743D patent/FR942743A/fr not_active Expired
- 1947-03-08 BE BE471721D patent/BE471721A/xx unknown
- 1947-03-10 CH CH259497D patent/CH259497A/de unknown
- 1947-03-10 NL NL130832A patent/NL66952C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| CH259497A (de) | 1949-01-31 |
| FR942743A (fr) | 1949-02-16 |
| NL66952C (https=) | 1950-12-15 |