NL68724C - - Google Patents

Info

Publication number: NL68724C
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.)

1947-04-29

Publication of NL68724C publication Critical patent/NL68724C/xx

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K7/00—Lamps for purposes other than general lighting
- H01K7/02—Lamps for purposes other than general lighting for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/002—Gyrators
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
- H03H7/0169—Intermediate frequency filters
- H03H7/0184—Intermediate frequency filters with ferromagnetic core

NL68724D 1947-04-29 NL68724C (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL645905X		1947-04-29

Publications (1)

Publication Number	Publication Date
NL68724C true NL68724C (xx)

Family

ID=19791923

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL68724D NL68724C (xx)	1947-04-29

Country Status (5)

Country	Link
US (1)	US2647239A (xx)
BE (1)	BE482214A (xx)
FR (1)	FR965369A (xx)
GB (1)	GB645905A (xx)
NL (1)	NL68724C (xx)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1066294B (de) *	1951-03-01	1959-10-01	N. V. Philips' Gloeilamkenfabrieken, Eindhoven (Niederlande)	Vierpol-Netzwerk zur Verbindung der Ausgangselektroden einer Verstärkerröhre mit den Eimgangselektroden der nachfolgenden Verstärkerröhre
US2794864A (en) *	1952-08-01	1957-06-04	Bell Telephone Labor Inc	Nonreciprocal circuits employing negative resistance elements
NL178570B (nl) *	1952-08-01		Mitsubishi Heavy Ind Ltd	Werkwijze en inrichting voor het vervaardigen van gietvormen door middel van vacuum.
US2885492A (en) *	1952-08-30	1959-05-05	Bell Telephone Labor Inc	Repeater systems employing non-reciprocal coupling devices
US2845595A (en) *	1952-12-06	1958-07-29	Gen Electric	Apparatus for measuring electrical quantities
US2802068A (en) *	1953-05-11	1957-08-06	Robert H Harwood	System of impedance matching utilizing grounded-grid amplifier termination
US2849642A (en) *	1953-06-17	1958-08-26	Bell Telephone Labor Inc	Traveling wave amplifier
US2788396A (en) *	1953-06-18	1957-04-09	Bell Telephone Labor Inc	Balancing arrangement
US2944212A (en) *	1953-07-06	1960-07-05	Varian Associates	Gyromagnetic resonance apparatus
US2894209A (en) *	1953-07-13	1959-07-07	Varian Associates	Gyromagnetic resonance apparatus
US2811697A (en) *	1953-09-16	1957-10-29	Bell Telephone Labor Inc	Magnetoelectric induction devices
US2887665A (en) *	1953-12-31	1959-05-19	Bell Telephone Labor Inc	High frequency isolator
US2873370A (en) *	1955-08-15	1959-02-10	Levinthal Electronics Products	Microwave pulse generator
NL212080A (xx) *	1956-11-09
US2868980A (en) *	1956-12-13	1959-01-13	Bell Telephone Labor Inc	Frequency changer and wave amplifier
US3010085A (en) *	1958-11-17	1961-11-21	Bell Telephone Labor Inc	Isolators in lumped constant systems
US3047821A (en) *	1960-12-27	1962-07-31	Aircraft Armaments Inc	Isolator using hall effect gyrator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1822129A (en) *	1926-07-09	1931-09-08	Invex Corp	System and apparatus employing the hall effect
US1948209A (en) *	1931-10-05	1934-02-20	Fichandler Carl	Magnetoresistive system and apparatus
US2383475A (en) *	1942-07-18	1945-08-28	Standard Telephones Cables Ltd	Transformer
US2379168A (en) *	1942-08-06	1945-06-26	Westinghouse Electric Corp	Thermionic tube circuits
FR970066A (xx) *	1947-08-16	1950-12-29

0
- FR FR965369D patent/FR965369A/fr not_active Expired
- NL NL68724D patent/NL68724C/xx active
- BE BE482214D patent/BE482214A/xx unknown
1948
- 1948-03-06 US US13506A patent/US2647239A/en not_active Expired - Lifetime
- 1948-04-26 GB GB11455/48A patent/GB645905A/en not_active Expired

Also Published As

Publication number	Publication date
GB645905A (en)	1950-11-08
US2647239A (en)	1953-07-28
FR965369A (xx)	1950-09-11
BE482214A (xx)

Publication	Publication Date	Title
FR970066A (xx)	1950-12-29
AT165716B (xx)	1950-04-11
AT166672B (xx)	1950-09-11
AT165673B (xx)	1950-04-11
AT165884B (xx)	1950-05-10
BE474505A (xx)	1947-04-30
BE472149A (xx)	1947-09-27
BE472071A (xx)
BE473400A (xx)
BE463900A (xx)
BE465296A (xx)
BE467279A (xx)
BE470620A (xx)
BE470671A (xx)
BE470729A (xx)
BE471160A (xx)
BE471167A (xx)	1947-08-13
BE471206A (xx)
BE471414A (xx)
BE474872A (xx)	1947-08-30
BE471492A (xx)
BE471627A (xx)
BE471830A (xx)	1947-04-30
BE474625A (xx)
BE422748A (xx)