BE349555A - - Google Patents
Info
- Publication number
- BE349555A BE349555A BE349555DA BE349555A BE 349555 A BE349555 A BE 349555A BE 349555D A BE349555D A BE 349555DA BE 349555 A BE349555 A BE 349555A
- 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)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR641969T | 1927-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE349555A true BE349555A (en:Method) |
Family
ID=8998529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE349555D BE349555A (en:Method) | 1927-03-19 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE349555A (en:Method) |
| FR (1) | FR641969A (en:Method) |
| GB (1) | GB287456A (en:Method) |
-
0
- BE BE349555D patent/BE349555A/xx unknown
-
1927
- 1927-03-19 FR FR641969D patent/FR641969A/fr not_active Expired
-
1928
- 1928-03-16 GB GB8097/28A patent/GB287456A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB287456A (en) | 1928-08-02 |
| FR641969A (fr) | 1928-08-14 |