NL51913C - - Google Patents
Info
- Publication number
- NL51913C NL51913C NL51913DA NL51913C NL 51913 C NL51913 C NL 51913C NL 51913D A NL51913D A NL 51913DA NL 51913 C NL51913 C NL 51913C
- 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
- G01S1/02—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 radio 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)
- Optical Communication System (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE212658X | 1937-06-24 | ||
| DE260637X | 1937-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL51913C true NL51913C (en:Method) |
Family
ID=25761190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL51913D NL51913C (en:Method) | 1937-06-24 |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH212658A (en:Method) |
| FR (1) | FR839554A (en:Method) |
| GB (2) | GB494564A (en:Method) |
| NL (1) | NL51913C (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3003148A (en) * | 1957-10-14 | 1961-10-03 | Koden Seisakusha Kk | Direction indicating device |
-
0
- NL NL51913D patent/NL51913C/xx active
-
1938
- 1938-06-02 GB GB16597/38A patent/GB494564A/en not_active Expired
- 1938-06-15 CH CH212658D patent/CH212658A/de unknown
- 1938-06-21 FR FR839554D patent/FR839554A/fr not_active Expired
- 1938-06-24 GB GB18840/38A patent/GB508139A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB494564A (en) | 1938-10-27 |
| GB508139A (en) | 1939-06-27 |
| CH212658A (de) | 1940-12-15 |
| FR839554A (fr) | 1939-04-06 |