NL72107C - - Google Patents

Info

Publication number: NL72107C
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.)

1940-02-29

Publication of NL72107C publication Critical patent/NL72107C/xx

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave

NL72107D 1940-02-29 NL72107C (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR971260T		1940-02-29

Publications (1)

Publication Number	Publication Date
NL72107C true NL72107C (xx)

Family

ID=9512011

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL72107D NL72107C (xx)	1940-02-29

Country Status (5)

Country	Link
US (1)	US2559092A (xx)
CH (1)	CH268704A (xx)
FR (1)	FR971260A (xx)
GB (1)	GB643738A (xx)
NL (1)	NL72107C (xx)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1345056A (en) *	1916-08-02	1920-06-29	Winston Overton	Headlight
US1559212A (en) *	1920-05-03	1925-10-27	Winston Overton	Reflector for headlights
US1735377A (en) *	1927-10-19	1929-11-12	Martha W Caughlan	Reflecting surface
US1932469A (en) *	1929-12-02	1933-10-31	Telefunken Gmbh	Short wave signaling
US1805886A (en) *	1930-10-31	1931-05-19	Conrad K Rizer	Headlight
NL38496C (xx) *	1932-07-06
GB436355A (en) *	1934-04-13	1935-10-09	Meaf Mach En Apparaten Fab Nv	A new or improved method of and apparatus for clustering short and ultra-short electro-magnetic waves
FR781464A (fr) *	1934-06-30	1935-05-16		Phare pour véhicules automobiles, vélos, avions, etc.
DE706661C (de) *	1936-01-17	1941-05-31	Telefunken Gmbh	Richtsendeanlage mit zwei voneinander unabhaengigen Richtcharakteristiken
US2423073A (en) *	1941-06-13	1947-06-24	Standard Telephones Cables Ltd	Electromagnetic wave radiator
NL73349C (xx) *	1941-11-28
US2408373A (en) *	1945-01-13	1946-10-01	Chu Lan Jen	Antenna

0
- NL NL72107D patent/NL72107C/xx active
1940
- 1940-02-29 FR FR971260D patent/FR971260A/fr not_active Expired
1947
- 1947-08-07 US US767097A patent/US2559092A/en not_active Expired - Lifetime
- 1947-08-14 GB GB22667/47A patent/GB643738A/en not_active Expired
- 1947-09-08 CH CH268704D patent/CH268704A/fr unknown

Also Published As

Publication number	Publication date
FR971260A (fr)	1951-01-15
US2559092A (en)	1951-07-03
CH268704A (fr)	1950-05-31
GB643738A (en)	1950-09-27

Publication	Publication Date	Title
AT166693B (xx)	1950-09-11
FR851850A (xx)	1940-01-16
FR851825A (xx)	1940-01-16
BE440256A (xx)	1941-01-28
BE437891A (xx)	1940-03-30
IT381340A (xx)
BE482112A (xx)
BE444034A (xx)
BE438217A (xx)
BE438183A (xx)
BE437917A (xx)
BE437808A (xx)
BE437800A (xx)
BE437554A (xx)
BE437143A (xx)
BE436800A (xx)
BE440179A (xx)
BE438632A (xx)
BE375327A (xx)
BE220358A (xx)
NL58896C (xx)
NL56427C (xx)
NL55221C (xx)
BE482544A (xx)
BE432598A (xx)