FR406772A - - Google Patents
Info
- Publication number
- FR406772A FR406772A FR406772DA FR406772A FR 406772 A FR406772 A FR 406772A FR 406772D A FR406772D A FR 406772DA FR 406772 A FR406772 A FR 406772A
- 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.)
- Active
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
- G01S1/72—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 ultrasonic, sonic or infrasonic 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)
- Examining Or Testing Airtightness (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB190919911T | 1909-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR406772A true FR406772A (es) |
Family
ID=32445606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR406772D Active FR406772A (es) | 1909-08-31 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR406772A (es) |
| GB (1) | GB190919911A (es) |
-
0
- FR FR406772D patent/FR406772A/fr active Active
-
1909
- 1909-08-31 GB GB190919911D patent/GB190919911A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB190919911A (en) | 1910-05-26 |