BE470922A - - Google Patents

Info

Publication number
BE470922A
BE470922A BE470922DA BE470922A BE 470922 A BE470922 A BE 470922A BE 470922D A BE470922D A BE 470922DA BE 470922 A BE470922 A BE 470922A
Authority
BE
Belgium
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.)
Publication of BE470922A publication Critical patent/BE470922A/xx

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
BE470922D 1944-01-31 BE470922A (fr)

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
BE470922A true BE470922A (fr)

Family

ID=24072365

Family Applications (1)

Application Number Title Priority Date Filing Date
BE470922D BE470922A (fr) 1944-01-31

Country Status (5)

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

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 (fr) * 1946-08-30
FR1137688A (fr) * 1954-10-22 1957-06-03 Thomson Houston Comp Francaise Cathode perfectionnée
DE1143589B (de) * 1959-12-22 1963-02-14 Edgerton Germeshausen And Grie Verfahren zur Herstellung eines Heizers fuer Kathoden von elektrischen Entladungsroehren
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 (fr) * 1929-11-13 1931-03-09 Telefunken Gmbh Tube à cathode chauffée et électrode de commande
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 (fr) * 1942-06-26

Also Published As

Publication number Publication date
US2421039A (en) 1947-05-27
CH259587A (de) 1949-01-31
GB590520A (en) 1947-07-21
FR928312A (fr) 1947-11-25

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