NL58571C - - Google Patents
Info
- Publication number
- NL58571C NL58571C NL91812A NL91812A NL58571C NL 58571 C NL58571 C NL 58571C NL 91812 A NL91812 A NL 91812A NL 91812 A NL91812 A NL 91812A NL 58571 C NL58571 C NL 58571C
- 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)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL94150D DE728287C (de) | 1938-02-05 | 1938-02-05 | Sendeanordnung zur Erzielung von Kurslinien |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL58571C true NL58571C (xx) | 1946-12-16 |
Family
ID=5836413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL91812A NL58571C (xx) | 1938-02-05 | 1939-02-03 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2248752A (xx) |
| CH (1) | CH220778A (xx) |
| DE (1) | DE728287C (xx) |
| FR (1) | FR866392A (xx) |
| NL (1) | NL58571C (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2418124A (en) * | 1942-09-07 | 1947-04-01 | Standard Telephones Cables Ltd | Directive antenna array |
| US2462881A (en) * | 1943-10-25 | 1949-03-01 | John W Marchetti | Antenna |
| US2582894A (en) * | 1945-07-26 | 1952-01-15 | Williams Frederic Calland | Wireless beacon system |
| US2578961A (en) * | 1948-01-15 | 1951-12-18 | Fr Sadir Carpentier Soc | Radio-guiding system |
-
1938
- 1938-02-05 DE DEL94150D patent/DE728287C/de not_active Expired
-
1939
- 1939-02-03 CH CH220778D patent/CH220778A/de unknown
- 1939-02-03 NL NL91812A patent/NL58571C/xx active
- 1939-02-03 FR FR866392D patent/FR866392A/fr not_active Expired
- 1939-02-04 US US254586A patent/US2248752A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH220778A (de) | 1942-04-30 |
| DE728287C (de) | 1942-11-24 |
| US2248752A (en) | 1941-07-08 |
| FR866392A (fr) | 1941-08-04 |