FR1152211A - Thermionic cathode for electron tubes - Google Patents

Thermionic cathode for electron tubes

Info

Publication number
FR1152211A
FR1152211A FR1152211DA FR1152211A FR 1152211 A FR1152211 A FR 1152211A FR 1152211D A FR1152211D A FR 1152211DA FR 1152211 A FR1152211 A FR 1152211A
Authority
FR
France
Prior art keywords
electron tubes
thermionic cathode
thermionic
cathode
tubes
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 FR1152211A publication Critical patent/FR1152211A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material
FR1152211D 1955-04-18 1956-04-16 Thermionic cathode for electron tubes Expired FR1152211A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1110255A GB801185A (en) 1955-04-18 1955-04-18 Improvements in and relating to cathodes of thermionic valves

Publications (1)

Publication Number Publication Date
FR1152211A true FR1152211A (en) 1958-02-13

Family

ID=9980075

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1152211D Expired FR1152211A (en) 1955-04-18 1956-04-16 Thermionic cathode for electron tubes

Country Status (2)

Country Link
FR (1) FR1152211A (en)
GB (1) GB801185A (en)

Also Published As

Publication number Publication date
GB801185A (en) 1958-09-10

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