NL42975C - - Google Patents
Info
- Publication number
- NL42975C NL42975C NL42975DA NL42975C NL 42975 C NL42975 C NL 42975C NL 42975D A NL42975D A NL 42975DA NL 42975 C NL42975 C NL 42975C
- 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)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Eye Examination Apparatus (AREA)
- Viewfinders (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE447238X | 1935-01-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL42975C true NL42975C (fr) |
Family
ID=3869763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL42975D NL42975C (fr) | 1935-01-04 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2033723A (fr) |
| BE (1) | BE407131A (fr) |
| DE (1) | DE689273C (fr) |
| FR (1) | FR796057A (fr) |
| GB (1) | GB447238A (fr) |
| NL (1) | NL42975C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2491785A (en) * | 1945-05-15 | 1949-12-20 | Raymond K Vermillion | Visual on and off course radio beam indicator |
-
0
- NL NL42975D patent/NL42975C/xx active
- BE BE407131D patent/BE407131A/xx unknown
-
1935
- 1935-03-08 DE DE1935M0130354 patent/DE689273C/de not_active Expired
- 1935-10-09 FR FR796057D patent/FR796057A/fr not_active Expired
- 1935-10-11 GB GB28155/35A patent/GB447238A/en not_active Expired
- 1935-10-19 US US45800A patent/US2033723A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE689273C (de) | 1940-03-15 |
| BE407131A (fr) | |
| GB447238A (en) | 1936-05-14 |
| FR796057A (fr) | 1936-03-28 |
| US2033723A (en) | 1936-03-10 |