NL32969C - - Google Patents
Info
- Publication number
- NL32969C NL32969C NL32969DA NL32969C NL 32969 C NL32969 C NL 32969C NL 32969D A NL32969D A NL 32969DA NL 32969 C NL32969 C NL 32969C
- 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)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB149526D DE610049C (de) | 1931-04-16 | 1931-04-16 | Vorrichtung zum Suchen und Verfolgen einer beweglichen Schallquelle bei Nacht |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL32969C true NL32969C (enrdf_load_html_response) |
Family
ID=7001972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL32969D NL32969C (enrdf_load_html_response) | 1931-04-16 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE610049C (enrdf_load_html_response) |
| NL (1) | NL32969C (enrdf_load_html_response) |
-
0
- NL NL32969D patent/NL32969C/xx active
-
1931
- 1931-04-16 DE DEB149526D patent/DE610049C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE610049C (de) | 1935-03-01 |