FR567998A - Signaling device - Google Patents
Signaling deviceInfo
- Publication number
- FR567998A FR567998A FR567998DA FR567998A FR 567998 A FR567998 A FR 567998A FR 567998D A FR567998D A FR 567998DA FR 567998 A FR567998 A FR 567998A
- Authority
- FR
- France
- Prior art keywords
- signaling device
- signaling
- Prior art date
- 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
- G01S1/72—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)
- Transducers For Ultrasonic Waves (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1598023A GB222425A (en) | 1923-06-20 | 1923-06-20 | Improvements in or relating to submarine signalling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR567998A true FR567998A (en) | 1924-03-12 |
Family
ID=10069049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR567998D Expired FR567998A (en) | 1923-06-20 | 1923-06-27 | Signaling device |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE403830C (en) |
| FR (1) | FR567998A (en) |
| GB (1) | GB222425A (en) |
-
1923
- 1923-06-20 GB GB1598023A patent/GB222425A/en not_active Expired
- 1923-06-27 FR FR567998D patent/FR567998A/en not_active Expired
- 1923-06-28 DE DEW64088D patent/DE403830C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB222425A (en) | 1924-09-22 |
| DE403830C (en) | 1924-10-07 |
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