NL81640C - - Google Patents

Info

Publication number: NL81640C
Authority: NL; Netherlands

Application number

Priority date (The priority date 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 date listed.)

1948-10-20

Publication of NL81640C publication Critical patent/NL81640C/xx

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
- 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)

NL81640D 1948-10-20 NL81640C (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB2686303X		1948-10-20

Publications (1)

Publication Number	Publication Date
NL81640C true NL81640C (fr)

Family

ID=10913455

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
NL656503202A NL149123B (nl)	1948-10-20		Regelklep, in het bijzonder voor motorvoertuigen met een dubbel remcircuit.
NL81640D NL81640C (fr)	1948-10-20

Family Applications Before (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 (fr)
NL (2)	NL81640C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 NL656503202A patent/NL149123B/xx unknown
- NL NL81640D patent/NL81640C/xx active
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)

Publication	Publication Date	Title
FR963711A (fr)	1950-07-19
FR937449A (fr)	1948-08-31
BE482108A (fr)	1950-03-03
BE481243A (fr)
BE484564A (fr)
BE483030A (fr)
BE479830A (fr)
BE479713A (fr)
BE482939A (fr)
BE479540A (fr)
BE482897A (fr)
BE482754A (fr)	1948-06-15
BE479349A (fr)	1948-01-31
BE482739A (fr)
BE482724A (fr)
BE479891A (fr)
BE482453A (fr)	1948-05-13
BE482415A (fr)
BE482360A (fr)	1948-05-31
BE478240A (fr)
BE482263A (fr)	1948-05-15
BE482110A (fr)
BE480805A (fr)
BE482555A (fr)
BE487024A (fr)