NL69674C - - Google Patents
Info
- Publication number
- NL69674C NL69674C NL137187A NL137187A NL69674C NL 69674 C NL69674 C NL 69674C NL 137187 A NL137187 A NL 137187A NL 137187 A NL137187 A NL 137187A NL 69674 C NL69674 C NL 69674C
- 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)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US312191A US2294882A (en) | 1940-01-03 | 1940-01-03 | Aircraft landing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL69674C true NL69674C (xx) | 1952-03-15 |
Family
ID=23210287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL137187A NL69674C (xx) | 1940-01-03 | 1947-12-10 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2294882A (xx) |
| BE (1) | BE474043A (xx) |
| CH (1) | CH278984A (xx) |
| ES (1) | ES176618A1 (xx) |
| FR (1) | FR928670A (xx) |
| GB (1) | GB546668A (xx) |
| NL (1) | NL69674C (xx) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2419609A (en) * | 1940-09-25 | 1947-04-29 | Standard Telephones Cables Ltd | Means for overcoming the effects of earth reflections in directional antenna systems |
| US2428582A (en) * | 1942-05-21 | 1947-10-07 | Rca Corp | Radio diversity transmitter |
| US2449999A (en) * | 1942-10-30 | 1948-09-28 | Standard Telephones Cables Ltd | Antenna system for defining glide paths |
| US2435988A (en) * | 1943-11-22 | 1948-02-17 | Sperry Corp | Aircraft landing system |
| US2536112A (en) * | 1943-11-22 | 1951-01-02 | Sperry Corp | Aircraft landing system |
| FR962483A (xx) * | 1944-05-01 | 1950-06-10 | ||
| US2526675A (en) * | 1945-04-28 | 1950-10-24 | Sperry Corp | Antenna structure |
| US2610321A (en) * | 1948-02-28 | 1952-09-09 | Int Standard Electric Corp | Glide path antenna |
| US2952845A (en) * | 1955-09-16 | 1960-09-13 | Hughes Aircraft Co | Instrument approach and landing system for aircraft |
-
0
- BE BE474043D patent/BE474043A/xx unknown
-
1940
- 1940-01-03 US US312191A patent/US2294882A/en not_active Expired - Lifetime
-
1941
- 1941-01-02 GB GB74/41A patent/GB546668A/en not_active Expired
-
1946
- 1946-02-15 FR FR928670D patent/FR928670A/fr not_active Expired
-
1947
- 1947-01-30 ES ES0176618A patent/ES176618A1/es not_active Expired
- 1947-02-06 CH CH278984D patent/CH278984A/de unknown
- 1947-12-10 NL NL137187A patent/NL69674C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| US2294882A (en) | 1942-09-08 |
| CH278984A (de) | 1951-11-15 |
| FR928670A (fr) | 1947-12-04 |
| ES176618A1 (es) | 1947-03-01 |
| GB546668A (en) | 1942-07-24 |
| BE474043A (xx) |