FR444805A - Improvements to acoustic receivers for ships and others - Google Patents
Improvements to acoustic receivers for ships and othersInfo
- Publication number
- FR444805A FR444805A FR444805DA FR444805A FR 444805 A FR444805 A FR 444805A FR 444805D A FR444805D A FR 444805DA FR 444805 A FR444805 A FR 444805A
- Authority
- FR
- France
- Prior art keywords
- ships
- acoustic receivers
- receivers
- acoustic
- 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)
- Arrangements For Transmission Of Measured Signals (AREA)
- Circuit For Audible Band Transducer (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE256747T | 1911-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR444805A true FR444805A (en) | 1912-10-26 |
Family
ID=32604293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR444805D Expired FR444805A (en) | 1911-06-10 | 1912-06-10 | Improvements to acoustic receivers for ships and others |
Country Status (3)
Country | Link |
---|---|
DE (3) | DE256747C (en) |
FR (1) | FR444805A (en) |
GB (1) | GB191213615A (en) |
-
0
- DE DENDAT257211D patent/DE257211C/de active Active
- DE DENDAT257212D patent/DE257212C/de active Active
-
1911
- 1911-06-10 DE DE1911256747D patent/DE256747C/de not_active Expired - Lifetime
-
1912
- 1912-06-10 GB GB191213615D patent/GB191213615A/en not_active Expired
- 1912-06-10 FR FR444805D patent/FR444805A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB191213615A (en) | 1913-06-10 |
DE256747C (en) | |
DE257211C (en) | |
DE257212C (en) |
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