NL48580C - - Google Patents
Info
- Publication number
- NL48580C NL48580C NL48580DA NL48580C NL 48580 C NL48580 C NL 48580C NL 48580D A NL48580D A NL 48580DA NL 48580 C NL48580 C NL 48580C
- 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)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2012637A GB499380A (en) | 1937-07-20 | 1937-07-20 | Improvements in or relating to the correctors of listening apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL48580C true NL48580C (enrdf_load_html_response) |
Family
ID=10140809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL48580D NL48580C (enrdf_load_html_response) | 1937-07-20 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB499380A (enrdf_load_html_response) |
| NL (1) | NL48580C (enrdf_load_html_response) |
-
0
- NL NL48580D patent/NL48580C/xx active
-
1937
- 1937-07-20 GB GB2012637A patent/GB499380A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB499380A (en) | 1939-01-20 |