FR928312A - Cathodes for electron tubes - Google Patents

Cathodes for electron tubes

Info

Publication number
FR928312A
FR928312A FR928312DA FR928312A FR 928312 A FR928312 A FR 928312A FR 928312D A FR928312D A FR 928312DA FR 928312 A FR928312 A FR 928312A
Authority
FR
France
Prior art keywords
cathodes
electron tubes
tubes
electron
Prior art date
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
French (fr)
Inventor
Carl August Segestrom Jr
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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.)
Filing date
Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR928312A publication Critical patent/FR928312A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/36—Tubes with flat electrodes, e.g. disc electrode
    • 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
FR928312D 1944-01-31 1946-01-12 Cathodes for electron tubes Expired FR928312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US520383A US2421039A (en) 1944-01-31 1944-01-31 Cathode structure

Publications (1)

Publication Number Publication Date
FR928312A true FR928312A (en) 1947-11-25

Family

ID=24072365

Family Applications (1)

Application Number Title Priority Date Filing Date
FR928312D Expired FR928312A (en) 1944-01-31 1946-01-12 Cathodes for electron tubes

Country Status (5)

Country Link
US (1) US2421039A (en)
BE (1) BE470922A (en)
CH (1) CH259587A (en)
FR (1) FR928312A (en)
GB (1) GB590520A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899591A (en) * 1959-08-11 Electrical heating device
US2500355A (en) * 1944-11-14 1950-03-14 Sylvania Electric Prod Electron discharge tube
US2436907A (en) * 1945-06-23 1948-03-02 Nasa Indirectly heated cathode
BE475720A (en) * 1946-08-30
GB820065A (en) * 1954-10-22 1959-09-16 Gen Electric Improvements relating to cathode structures for electric discharge devices
DE1143589B (en) * 1959-12-22 1963-02-14 Edgerton Germeshausen And Grie Method of manufacturing a heater for cathodes of electrical discharge tubes
US3558965A (en) * 1967-10-02 1971-01-26 Nat Video Corp Cathode for television tube and method of making
US4296311A (en) * 1979-08-15 1981-10-20 The Kanthal Corporation Electric hot plate
GB2192751B (en) * 1986-07-14 1991-02-13 Denki Kagaku Kogyo Kk Method of making a thermionic cathode structure.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1102249A (en) * 1911-10-31 1914-07-07 Cutler Hammer Mfg Co Electric resistance unit.
US1539497A (en) * 1922-03-27 1925-05-26 W B Mcallister Company Electrical heating device
US1866195A (en) * 1929-06-01 1932-07-05 Ile De France Radio valves employing gallium
FR700923A (en) * 1929-11-13 1931-03-09 Telefunken Gmbh Heated cathode tube and control electrode
US2051637A (en) * 1934-12-07 1936-08-18 Electric Trading Corp Electrical heating device
US2300891A (en) * 1941-04-25 1942-11-03 Hankscraft Co Liquid conductor heater
US2357905A (en) * 1942-01-26 1944-09-12 Mcgraw Electric Co Automatic sadiron
BE478852A (en) * 1942-06-26

Also Published As

Publication number Publication date
CH259587A (en) 1949-01-31
GB590520A (en) 1947-07-21
US2421039A (en) 1947-05-27
BE470922A (en)

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