NL34413C - - Google Patents

Info

Publication number: NL34413C
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.)

1930-04-05

Publication of NL34413C publication Critical patent/NL34413C/xx

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps

NL34413D 1930-04-05 NL34413C (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US441986A US2009839A (en)	1930-04-05	1930-04-05	Thermionic cathode

Publications (1)

Publication Number	Publication Date
NL34413C true NL34413C (enrdf_load_html_response)

Family

ID=23755087

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL34413D NL34413C (enrdf_load_html_response)	1930-04-05

Country Status (3)

Country	Link
US (1)	US2009839A (enrdf_load_html_response)
GB (1)	GB375851A (enrdf_load_html_response)
NL (1)	NL34413C (enrdf_load_html_response)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2496374A (en) *	1943-11-24	1950-02-07	Boucher And Keiser Company	Tubular electric lamp
US2488727A (en) *	1947-01-13	1949-11-22	Gen Electric	Electrode for electric discharge devices
US2549355A (en) *	1948-02-28	1951-04-17	Gen Electric	Fluorescent lamp
US2699514A (en) *	1951-11-28	1955-01-11	Duro Test Corp	Fluorescent lamp
BE528714A (enrdf_load_html_response) *	1953-06-15
US2871394A (en) *	1955-11-28	1959-01-27	Raytheon Mfg Co	Electron discharge devices and cathodes therefor
US4117374A (en) *	1976-12-23	1978-09-26	General Electric Company	Fluorescent lamp with opposing inversere cone electrodes

0
- NL NL34413D patent/NL34413C/xx active
1930
- 1930-04-05 US US441986A patent/US2009839A/en not_active Expired - Lifetime
1931
- 1931-03-30 GB GB9652/31A patent/GB375851A/en not_active Expired

Also Published As

Publication number	Publication date
US2009839A (en)	1935-07-30
GB375851A (en)	1932-06-30

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