NL12364C - - Google Patents
Info
- Publication number
- NL12364C NL12364C NL12364DA NL12364C NL 12364 C NL12364 C NL 12364C NL 12364D A NL12364D A NL 12364DA NL 12364 C NL12364 C NL 12364C
- 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
- G01S1/72—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)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US306689D US1682712A (en) | 1919-06-25 | 1919-06-25 | Electric compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL12364C true NL12364C (en:Method) |
Family
ID=23186406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL12364D NL12364C (en:Method) | 1919-06-25 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1682712A (en:Method) |
| FR (1) | FR524962A (en:Method) |
| GB (1) | GB146193A (en:Method) |
| NL (1) | NL12364C (en:Method) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2786193A (en) * | 1948-03-10 | 1957-03-19 | Raytheon Mfg Co | Underwater sound system |
| US2752584A (en) * | 1950-12-13 | 1956-06-26 | Melpar Inc | Sonic system |
| BE510259A (en:Method) * | 1951-03-28 | |||
| US2847648A (en) * | 1954-02-02 | 1958-08-12 | Control Electronics Company In | Printed delay line |
| FR2542095B1 (fr) * | 1982-08-09 | 1987-12-18 | Lem Sa | Ensemble d'ecoute a distance |
-
0
- NL NL12364D patent/NL12364C/xx active
-
1919
- 1919-06-25 US US306689D patent/US1682712A/en not_active Expired - Lifetime
-
1920
- 1920-06-25 GB GB17360/20A patent/GB146193A/en not_active Expired
- 1920-07-10 FR FR524962A patent/FR524962A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1682712A (en) | 1928-08-28 |
| GB146193A (en) | 1921-10-25 |
| FR524962A (fr) | 1921-09-13 |