FR819631A - Electric discharge tube comprising an oxide cathode - Google Patents

Electric discharge tube comprising an oxide cathode

Info

Publication number
FR819631A
FR819631A FR819631DA FR819631A FR 819631 A FR819631 A FR 819631A FR 819631D A FR819631D A FR 819631DA FR 819631 A FR819631 A FR 819631A
Authority
FR
France
Prior art keywords
electric discharge
discharge tube
oxide cathode
cathode
oxide
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)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR819631A publication Critical patent/FR819631A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical
FR819631D 1936-03-24 1937-03-23 Electric discharge tube comprising an oxide cathode Expired FR819631A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL819631X 1936-03-24

Publications (1)

Publication Number Publication Date
FR819631A true FR819631A (en) 1937-10-22

Family

ID=19839017

Family Applications (1)

Application Number Title Priority Date Filing Date
FR819631D Expired FR819631A (en) 1936-03-24 1937-03-23 Electric discharge tube comprising an oxide cathode

Country Status (1)

Country Link
FR (1) FR819631A (en)

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