FR49594E - - Google Patents
Info
- Publication number
- FR49594E FR49594E FR49594DA FR49594E FR 49594 E FR49594 E FR 49594E FR 49594D A FR49594D A FR 49594DA FR 49594 E FR49594 E FR 49594E
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL496129X | 1937-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR49594E true FR49594E (fr) | 1939-05-11 |
Family
ID=19936402
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR826473D Expired FR826473A (fr) | 1937-01-11 | 1937-09-09 | Perfectionnements aux systèmes directifs et leur application au guidage des mobiles |
| FR49594D Expired FR49594E (fr) | 1937-01-11 | 1938-06-22 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR826473D Expired FR826473A (fr) | 1937-01-11 | 1937-09-09 | Perfectionnements aux systèmes directifs et leur application au guidage des mobiles |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2224233A (fr) |
| FR (2) | FR826473A (fr) |
| GB (1) | GB496129A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2570738A (en) * | 1944-05-15 | 1951-10-09 | Scophony Corp Of America | Radio location |
-
1937
- 1937-05-22 GB GB14327/37A patent/GB496129A/en not_active Expired
- 1937-09-09 FR FR826473D patent/FR826473A/fr not_active Expired
-
1938
- 1938-05-05 US US206141A patent/US2224233A/en not_active Expired - Lifetime
- 1938-06-22 FR FR49594D patent/FR49594E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2224233A (en) | 1940-12-10 |
| FR826473A (fr) | 1938-03-31 |
| GB496129A (en) | 1938-11-22 |