FR707662A - Perfectionnements aux valves thermoioniques - Google Patents

Perfectionnements aux valves thermoioniques

Info

Publication number
FR707662A
FR707662A FR707662DA FR707662A FR 707662 A FR707662 A FR 707662A FR 707662D A FR707662D A FR 707662DA FR 707662 A FR707662 A FR 707662A
Authority
FR
France
Prior art keywords
thermionic valves
thermionic
valves
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
English (en)
Inventor
Paul Freedman
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 filed Critical
Application granted granted Critical
Publication of FR707662A publication Critical patent/FR707662A/fr
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
FR707662D 1930-01-13 1930-12-02 Perfectionnements aux valves thermoioniques Expired FR707662A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB116130A GB346050A (en) 1930-01-13 1930-01-13 Improvements in or relating to thermionic valves

Publications (1)

Publication Number Publication Date
FR707662A true FR707662A (fr) 1931-07-10

Family

ID=9717232

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707662D Expired FR707662A (fr) 1930-01-13 1930-12-02 Perfectionnements aux valves thermoioniques

Country Status (2)

Country Link
FR (1) FR707662A (fr)
GB (1) GB346050A (fr)

Also Published As

Publication number Publication date
GB346050A (en) 1931-04-09

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