NL64946C - - Google Patents
Info
- Publication number
- NL64946C NL64946C NL64946DA NL64946C NL 64946 C NL64946 C NL 64946C NL 64946D A NL64946D A NL 64946DA NL 64946 C NL64946 C NL 64946C
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/04—Display arrangements
- G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
- G01S7/10—Providing two-dimensional and co-ordinated display of distance and direction
- G01S7/12—Plan-position indicators, i.e. P.P.I.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB31486/39A GB609703A (en) | 1939-12-05 | 1939-12-05 | Improvements relating to electrical apparatus for indicating the positions of bodies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL64946C true NL64946C (US06623731-20030923-C00012.png) |
Family
ID=32299588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL64946D NL64946C (US06623731-20030923-C00012.png) | 1939-12-05 |
Country Status (7)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11002778B2 (en) * | 2019-09-20 | 2021-05-11 | Rohde & Schwarz Gmbh & Co. Kg | Determining the phase center of an antenna |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2009459A (en) * | 1929-07-29 | 1935-07-30 | Submarine Signal Co | Distance and depth finding |
| US1983254A (en) * | 1930-05-19 | 1934-12-04 | Submarine Signal Co | Method and apparatus for distance finding |
| US1889614A (en) * | 1930-06-16 | 1932-11-29 | Gen Electric | Sound wave apparatus |
| US2130912A (en) * | 1934-10-30 | 1938-09-20 | Rca Corp | Direction finder |
| US2098287A (en) * | 1935-12-21 | 1937-11-09 | Bell Telephone Labor Inc | System of indicating distance |
| FR812975A (fr) * | 1936-01-29 | 1937-05-21 | Csf | Perfectionnements à la détection des obstacles par ondes électromagnétiques |
| DE925198C (de) * | 1936-04-28 | 1955-03-14 | Telefunken Gmbh | Einrichtung zur gleichzeitigen Anzeige sowohl des Abstandes als auch der genauen Richtung mehrerer reflektierender Gegenstaende |
| US2154127A (en) * | 1936-07-07 | 1939-04-11 | Radio Patents Corp | Electromechanical oscillating device |
| US2231929A (en) * | 1937-04-29 | 1941-02-18 | Sperry Gyroscope Co Inc | Tridimensional radio direction indicator |
| GB500588A (en) * | 1937-08-13 | 1939-02-13 | Marconi Wireless Telegraph Co | Improvements in or relating to radio apparatus for detecting aircraft |
| FR837278A (fr) * | 1937-10-02 | 1939-02-07 | Materiel Telephonique | Dispositifs de sondage utilisant des ondes électro-magnétiques |
| US2172395A (en) * | 1938-02-28 | 1939-09-12 | Joseph M Mcspadden | Sonic depth indicator apparatus |
| DE767425C (de) * | 1939-05-14 | 1952-08-28 | Atlas Werke Ag | Verfahren und Vorrichtung zur Bestimmung der Richtung und Entfernung von Objekten nach der Echomethode |
| US2228266A (en) * | 1939-07-01 | 1941-01-14 | Bell Telephone Labor Inc | Signal translating apparatus |
| US2536771A (en) * | 1939-11-21 | 1951-01-02 | Rost Helge Fabian | Subaqueous sound transmission system for object detection |
| US2313966A (en) * | 1941-03-31 | 1943-03-16 | Rca Corp | Cathode ray tube system |
-
0
- NL NL64946D patent/NL64946C/xx active
- BE BE474225D patent/BE474225A/xx unknown
- FR FR961701D patent/FR961701A/fr not_active Expired
- BE BE463611D patent/BE463611A/xx unknown
-
1939
- 1939-12-05 GB GB31486/39A patent/GB609703A/en not_active Expired
-
1940
- 1940-12-05 US US368743A patent/US2663014A/en not_active Expired - Lifetime
-
1946
- 1946-02-15 ES ES172579A patent/ES172579A1/es not_active Expired
- 1946-05-06 FR FR926319D patent/FR926319A/fr not_active Expired
-
1947
- 1947-06-02 GB GB14601/47A patent/GB646141A/en not_active Expired
-
1950
- 1950-07-28 DE DEC1859A patent/DE970278C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR926319A (fr) | 1947-09-29 |
| ES172579A1 (es) | 1946-03-16 |
| GB646141A (en) | 1950-11-15 |
| GB609703A (en) | 1948-10-06 |
| BE474225A (US06623731-20030923-C00012.png) | |
| US2663014A (en) | 1953-12-15 |
| DE970278C (de) | 1958-09-04 |
| BE463611A (US06623731-20030923-C00012.png) | |
| FR961701A (US06623731-20030923-C00012.png) | 1950-05-19 |
