FR889501A - - Google Patents

Info

Publication number
FR889501A
FR889501A FR889501DA FR889501A FR 889501 A FR889501 A FR 889501A FR 889501D A FR889501D A FR 889501DA FR 889501 A FR889501 A FR 889501A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR889501A publication Critical patent/FR889501A/fr
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
FR889501D Expired FR889501A (US20080005853A1-20080110-C00027.png)

Publications (1)

Publication Number Publication Date
FR889501A true FR889501A (US20080005853A1-20080110-C00027.png) 1944-01-12

Family

ID=1556590

Family Applications (1)

Application Number Title Priority Date Filing Date
FR889501D Expired FR889501A (US20080005853A1-20080110-C00027.png)

Country Status (1)

Country Link
FR (1) FR889501A (US20080005853A1-20080110-C00027.png)

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