NL57691C - - Google Patents
Info
- Publication number
- NL57691C NL57691C NL57691DA NL57691C NL 57691 C NL57691 C NL 57691C NL 57691D A NL57691D A NL 57691DA NL 57691 C NL57691 C NL 57691C
- 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)
- Analysing Materials By The Use Of Radiation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE224237X | 1940-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL57691C true NL57691C (fr) |
Family
ID=5854830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL57691D NL57691C (fr) | 1940-01-18 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2297476A (fr) |
| BE (1) | BE440307A (fr) |
| CH (1) | CH224237A (fr) |
| FR (1) | FR869605A (fr) |
| NL (1) | NL57691C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2526549A (en) * | 1946-02-02 | 1950-10-17 | Rca Corp | Radio-frequency current transformer |
-
0
- BE BE440307D patent/BE440307A/xx unknown
- NL NL57691D patent/NL57691C/xx active
-
1941
- 1941-01-08 CH CH224237D patent/CH224237A/de unknown
- 1941-01-16 US US374652A patent/US2297476A/en not_active Expired - Lifetime
- 1941-01-28 FR FR869605D patent/FR869605A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH224237A (de) | 1942-11-15 |
| BE440307A (fr) | |
| FR869605A (fr) | 1942-02-09 |
| US2297476A (en) | 1942-09-29 |