FR865427A - Improvements to shortwave lamps - Google Patents

Improvements to shortwave lamps

Info

Publication number
FR865427A
FR865427A FR865427DA FR865427A FR 865427 A FR865427 A FR 865427A FR 865427D A FR865427D A FR 865427DA FR 865427 A FR865427 A FR 865427A
Authority
FR
France
Prior art keywords
shortwave
lamps
shortwave lamps
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of FR865427A publication Critical patent/FR865427A/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
    • H01J2893/0021—Chemical composition and manufacture chemical carbon
FR865427D 1939-05-04 1940-05-04 Improvements to shortwave lamps Expired FR865427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE865427X 1939-05-04

Publications (1)

Publication Number Publication Date
FR865427A true FR865427A (en) 1941-05-23

Family

ID=6801843

Family Applications (1)

Application Number Title Priority Date Filing Date
FR865427D Expired FR865427A (en) 1939-05-04 1940-05-04 Improvements to shortwave lamps

Country Status (1)

Country Link
FR (1) FR865427A (en)

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