FR818011A - Electric discharge tubes - Google Patents

Electric discharge tubes

Info

Publication number
FR818011A
FR818011A FR818011DA FR818011A FR 818011 A FR818011 A FR 818011A FR 818011D A FR818011D A FR 818011DA FR 818011 A FR818011 A FR 818011A
Authority
FR
France
Prior art keywords
electric discharge
discharge tubes
tubes
electric
discharge
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 FR818011A publication Critical patent/FR818011A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J1/26—Supports for the emissive material
    • 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
FR818011D 1936-02-19 1937-02-17 Electric discharge tubes Expired FR818011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL476090X 1936-02-19

Publications (1)

Publication Number Publication Date
FR818011A true FR818011A (en) 1937-09-16

Family

ID=19786520

Family Applications (1)

Application Number Title Priority Date Filing Date
FR818011D Expired FR818011A (en) 1936-02-19 1937-02-17 Electric discharge tubes

Country Status (4)

Country Link
AT (1) AT158535B (en)
BE (1) BE420071A (en)
FR (1) FR818011A (en)
GB (1) GB476090A (en)

Also Published As

Publication number Publication date
GB476090A (en) 1937-12-01
AT158535B (en) 1940-04-25
BE420071A (en)

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