FR692230A - Perfectionnements aux lampes thermoioniques - Google Patents

Perfectionnements aux lampes thermoioniques

Info

Publication number
FR692230A
FR692230A FR692230DA FR692230A FR 692230 A FR692230 A FR 692230A FR 692230D A FR692230D A FR 692230DA FR 692230 A FR692230 A FR 692230A
Authority
FR
France
Prior art keywords
thermionic
lamps
thermionic 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
English (en)
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.)
Arcturus Radio Tube Co
Original Assignee
Arcturus Radio Tube Co
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 Arcturus Radio Tube Co filed Critical Arcturus Radio Tube Co
Application granted granted Critical
Publication of FR692230A publication Critical patent/FR692230A/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
FR692230D 1929-03-21 1930-03-18 Perfectionnements aux lampes thermoioniques Expired FR692230A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US357496TA 1929-03-21 1929-03-21

Publications (1)

Publication Number Publication Date
FR692230A true FR692230A (fr) 1930-10-31

Family

ID=31946092

Family Applications (1)

Application Number Title Priority Date Filing Date
FR692230D Expired FR692230A (fr) 1929-03-21 1930-03-18 Perfectionnements aux lampes thermoioniques

Country Status (2)

Country Link
FR (1) FR692230A (fr)
GB (1) GB357496A (fr)

Also Published As

Publication number Publication date
GB357496A (fr) 1931-09-24

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