NL90308C - - Google Patents
Info
- Publication number
- NL90308C NL90308C NL90308DA NL90308C NL 90308 C NL90308 C NL 90308C NL 90308D A NL90308D A NL 90308DA NL 90308 C NL90308 C NL 90308C
- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/023—Monitoring or calibrating
-
- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/04—Details
- G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE702178X | 1950-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL90308C true NL90308C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) |
Family
ID=6612257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL90308D NL90308C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) | 1950-10-30 |
Country Status (5)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO131561C (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) * | 1971-05-07 | 1975-06-18 | Standard Tel Kabelfab As |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB584727A (en) * | 1941-06-04 | 1947-01-22 | Harvey Fisher Schwarz | Improvements in radio control systems for movable objects |
| US2468028A (en) * | 1945-05-12 | 1949-04-26 | Standard Telephones Cables Ltd | Method and apparatus for testing direction finders |
| US2607034A (en) * | 1946-04-29 | 1952-08-12 | Maxwell K Goldstein | Signal generator system |
| US2510074A (en) * | 1946-05-14 | 1950-06-06 | Int Standard Electric Corp | Display arrangement for electric oscillographs |
-
0
- NL NL90308D patent/NL90308C/xx active
- BE BE506776D patent/BE506776A/xx unknown
-
1951
- 1951-10-18 FR FR1043966D patent/FR1043966A/fr not_active Expired
- 1951-10-23 US US252663A patent/US2687521A/en not_active Expired - Lifetime
- 1951-10-30 GB GB25304/51A patent/GB702178A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE506776A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) | |
| FR1043966A (fr) | 1953-11-13 |
| US2687521A (en) | 1954-08-24 |
| GB702178A (en) | 1954-01-13 |