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FR684114A - Improvements to electronic tubes - Google Patents

Improvements to electronic tubes

Info

Publication number
FR684114A
FR684114A FR684114DA FR684114A FR 684114 A FR684114 A FR 684114A FR 684114D A FR684114D A FR 684114DA FR 684114 A FR684114 A FR 684114A
Authority
FR
France
Prior art keywords
electronic tubes
tubes
electronic
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)
Inventor
Lucien Levy
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 FR684114A publication Critical patent/FR684114A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/15Cathodes heated directly by an electric current
    • H01J1/18Supports; Vibration-damping arrangements
FR684114D 1929-02-05 1929-02-05 Improvements to electronic tubes Expired FR684114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR684114T 1929-02-05

Publications (1)

Publication Number Publication Date
FR684114A true FR684114A (en) 1930-06-21

Family

ID=9024282

Family Applications (1)

Application Number Title Priority Date Filing Date
FR684114D Expired FR684114A (en) 1929-02-05 1929-02-05 Improvements to electronic tubes

Country Status (1)

Country Link
FR (1) FR684114A (en)

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