FR943074A - Improvements to discharge tubes - Google Patents

Improvements to discharge tubes

Info

Publication number: FR943074A
Authority: FR; France
Prior art keywords: discharge tubes; tubes; discharge
Prior art date: 1943-05-28
Legal status (The legal status 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 status listed.): Expired

Application number

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Compagnie Francaise Thomson Houston SA

Original Assignee

Compagnie Francaise Thomson Houston SA

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.)

1943-05-28

Filing date

1947-03-12

Publication date

1949-02-25

1947-03-12 Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA

1949-02-25 Application granted granted Critical

1949-02-25 Publication of FR943074A publication Critical patent/FR943074A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/50—Thermionic-cathode tubes
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
- H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes

FR943074D 1943-05-28 1947-03-12 Improvements to discharge tubes Expired FR943074A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US488825A US2416661A (en)	1943-05-28	1943-05-28	Dispenser type cathode electric discharge device

Publications (1)

Publication Number	Publication Date
FR943074A true FR943074A (en)	1949-02-25

Family

ID=23941276

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR943074D Expired FR943074A (en)	1943-05-28	1947-03-12	Improvements to discharge tubes

Country Status (3)

Country	Link
US (1)	US2416661A (en)
BE (1)	BE477491A (en)
FR (1)	FR943074A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2491425A (en) *	1946-01-26	1949-12-13	Raytheon Mfg Co	Electrode structure for gaseous discharge devices
US2678403A (en) *	1946-05-03	1954-05-11	Us Navy	Grid probe structure
US2592556A (en) *	1947-09-25	1952-04-15	Kenneth J Germeshausen	Gaseous-discharge device
US2624024A (en) *	1949-10-26	1952-12-30	Hartford Nat Bank & Trust Co	Cathode for use in electron discharge tubes
US2640949A (en) *	1951-02-07	1953-06-02	Atomic Energy Commission	Electron source
NL95281C (en) *	1952-04-09
US2757308A (en) *	1954-01-28	1956-07-31	Gera Corp	Emissive cathode
US3201639A (en) *	1955-02-09	1965-08-17	Philips Corp	Thermionic dispenser cathode
GB931059A (en) *	1961-02-10	1963-07-10	Thorn Electrical Ind Ltd	Improvements in and relating to thermionic cathodes
US3439210A (en) *	1966-01-03	1969-04-15	Hughes Aircraft Co	Thermionic emission cathode having reduced frontal area and enlarged emission area for ion bombardment environment
US3461334A (en) *	1967-02-27	1969-08-12	Westinghouse Electric Corp	Ceramic discharge lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR593479A (en) *	1924-04-10	1925-08-24	Philips Nv	Incandescent cathode discharge tube, having an envelope consisting partly of insulating material and partly of metal
US2201731A (en) *	1938-11-30	1940-05-21	Gen Electric	Discharge tube electrode assembly
US2317222A (en) *	1941-03-20	1943-04-20	Bell Telephone Labor Inc	Electron discharge device

0
- BE BE477491D patent/BE477491A/xx unknown
1943
- 1943-05-28 US US488825A patent/US2416661A/en not_active Expired - Lifetime
1947
- 1947-03-12 FR FR943074D patent/FR943074A/en not_active Expired

Also Published As

Publication number	Publication date
US2416661A (en)	1947-02-25
BE477491A (en)

Similar Documents

Publication	Publication Date	Title
FR925815A (en)	1947-09-15	Improvements to discharge tubes
FR938859A (en)	1948-10-27	Improvements to electric discharge tubes
FR943074A (en)	1949-02-25	Improvements to discharge tubes
FR942850A (en)	1949-02-18	Improvements to thermo-ionic lamp devices
FR948610A (en)	1949-08-05	Improvements to discharge tubes
FR931222A (en)	1948-02-17	Improvements to discharge tubes
FR906875A (en)	1946-02-22	Discharge tube
FR950304A (en)	1949-09-23	Improvements to discharge tubes
FR939257A (en)	1948-11-09	Improvements to electronic discharge tubes
FR985472A (en)	1951-07-19	Improvements to hand sharpeners
FR919228A (en)	1947-03-03	Improvements to compressors
FR879105A (en)	1943-02-15	Improvements made to electric discharge tubes
FR906922A (en)	1946-02-25	Improvements to discharge tubes
FR903187A (en)	1945-09-26	Improvements to electric discharge tubes
FR915556A (en)	1946-11-12	Electric discharge tube
FR903633A (en)	1945-10-10	Discharge tube
FR901953A (en)	1945-08-14	Discharge tube
FR901858A (en)	1945-08-08	Discharge tube
FR906849A (en)	1946-02-21	Discharge tube
FR966788A (en)	1950-10-18	Improvements to discharge tubes
FR946786A (en)	1949-06-14	Improvements to discharge tube circuits
FR939253A (en)	1948-11-09	Improvements to vacuum tubes
FR902966A (en)	1945-09-18	Improvements to vacuum tubes
FR931955A (en)	1948-03-09	Improvements to refrigeration containers
FR906916A (en)	1946-02-25	Improvements to electric discharge tubes