NL81640C - - Google Patents
Info
- Publication number
- NL81640C NL81640C NL81640DA NL81640C NL 81640 C NL81640 C NL 81640C NL 81640D A NL81640D A NL 81640DA NL 81640 C NL81640 C NL 81640C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/06—Cavity resonators
-
- 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
- G01S1/02—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 radio waves
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- 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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
- G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
- G01S13/756—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using a signal generator for modifying the reflectivity of the reflector
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2686303X | 1948-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL81640C true NL81640C (hu) |
Family
ID=10913455
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL81640D NL81640C (hu) | 1948-10-20 | ||
| NL656503202A NL149123B (nl) | 1948-10-20 | Regelklep, in het bijzonder voor motorvoertuigen met een dubbel remcircuit. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL656503202A NL149123B (nl) | 1948-10-20 | Regelklep, in het bijzonder voor motorvoertuigen met een dubbel remcircuit. |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2686303A (hu) |
| NL (2) | NL149123B (hu) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2924819A (en) * | 1955-08-29 | 1960-02-09 | Gilfillan Bros Inc | Apparatus for drift compensation in aircraft guidance systems |
| GB2179458B (en) * | 1985-08-23 | 1988-11-09 | Ferranti Plc | Microwave noise measuring apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2461005A (en) * | 1940-04-05 | 1949-02-08 | Bell Telephone Labor Inc | Ultra high frequency transmission |
| US2436640A (en) * | 1942-05-07 | 1948-02-24 | Nils Georg Schonander | Device for the frequency modulation of the resonant frequency of cavity resonators |
| US2433868A (en) * | 1943-08-18 | 1948-01-06 | Sperry Gyroscope Co Inc | Radar test apparatus |
| US2449451A (en) * | 1944-09-28 | 1948-09-14 | Westinghouse Electric Corp | High-frequency dielectric heating apparatus |
| US2510299A (en) * | 1945-01-01 | 1950-06-06 | Bell Telephone Labor Inc | Pulse-echo testing system |
| US2414456A (en) * | 1945-04-19 | 1947-01-21 | Bell Telephone Labor Inc | Electrical testing system |
| US2520604A (en) * | 1947-04-30 | 1950-08-29 | Rca Corp | Microwave mode changer and integrator |
-
0
- NL NL81640D patent/NL81640C/xx active
- NL NL656503202A patent/NL149123B/xx unknown
-
1949
- 1949-10-12 US US120881A patent/US2686303A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2686303A (en) | 1954-08-10 |
| NL149123B (nl) |