BE440192A - - Google Patents

Info

Publication number
BE440192A
BE440192A BE440192DA BE440192A BE 440192 A BE440192 A BE 440192A BE 440192D A BE440192D A BE 440192DA BE 440192 A BE440192 A BE 440192A
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 BE440192A publication Critical patent/BE440192A/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • 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
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H01J1/142—Solid thermionic cathodes characterised by the material with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material
BE440192D 1940-02-21 BE440192A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU228317X 1940-02-21

Publications (1)

Publication Number Publication Date
BE440192A true BE440192A (zh)

Family

ID=10978375

Family Applications (1)

Application Number Title Priority Date Filing Date
BE440192D BE440192A (zh) 1940-02-21

Country Status (3)

Country Link
BE (1) BE440192A (zh)
CH (1) CH228317A (zh)
FR (1) FR869892A (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09147735A (ja) * 1995-09-21 1997-06-06 Matsushita Electron Corp 陰極線管用エミッタ材料及びその製造方法
US5925976A (en) * 1996-11-12 1999-07-20 Matsushita Electronics Corporation Cathode for electron tube having specific emissive material

Also Published As

Publication number Publication date
FR869892A (fr) 1942-02-23
CH228317A (de) 1943-08-15

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