NL50811C - - Google Patents
Info
- Publication number
- NL50811C NL50811C NL50811DA NL50811C NL 50811 C NL50811 C NL 50811C NL 50811D A NL50811D A NL 50811DA NL 50811 C NL50811 C NL 50811C
- Authority
- NL
- Netherlands
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)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1163939A GB527737A (en) | 1939-04-17 | 1939-04-17 | Recording apparatus for the measurement of distance by the echo-sounding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL50811C true NL50811C (it) |
Family
ID=9989963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL50811D NL50811C (it) | 1939-04-17 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB527737A (it) |
| NL (1) | NL50811C (it) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2534820A (en) * | 1947-05-20 | 1950-12-19 | Panoramic Radio Corp | Radar azimuth and distance indication recorder |
| US2892667A (en) * | 1955-06-03 | 1959-06-30 | Robert A Hermann | Range and bearing sonar recording device |
-
0
- NL NL50811D patent/NL50811C/xx active
-
1939
- 1939-04-17 GB GB1163939A patent/GB527737A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2534820A (en) * | 1947-05-20 | 1950-12-19 | Panoramic Radio Corp | Radar azimuth and distance indication recorder |
| US2892667A (en) * | 1955-06-03 | 1959-06-30 | Robert A Hermann | Range and bearing sonar recording device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB527737A (en) | 1940-10-15 |