BE404582A - - Google Patents
Info
- Publication number
- BE404582A BE404582A BE404582DA BE404582A BE 404582 A BE404582 A BE 404582A BE 404582D A BE404582D A BE 404582DA BE 404582 A BE404582 A BE 404582A
- 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)
- Magnetic Treatment Devices (AREA)
- Percussion Or Vibration Massage (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2275433A GB421205A (en) | 1933-08-15 | 1933-08-15 | Improvements in and relating to echo sounding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE404582A true BE404582A (en) |
Family
ID=10184532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE404582D BE404582A (en) | 1933-08-15 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE404582A (en) |
| DE (1) | DE660281C (en) |
| FR (1) | FR777057A (en) |
| GB (1) | GB421205A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE480461A (en) * | 1947-02-20 |
-
0
- BE BE404582D patent/BE404582A/xx unknown
-
1933
- 1933-08-15 GB GB2275433A patent/GB421205A/en not_active Expired
-
1934
- 1934-08-03 DE DEH140866D patent/DE660281C/en not_active Expired
- 1934-08-09 FR FR777057D patent/FR777057A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR777057A (en) | 1935-02-11 |
| DE660281C (en) | 1938-05-23 |
| GB421205A (en) | 1934-12-17 |