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GEMA GES FU R ELEKTROAKUSTISCH
Original Assignee
GEMA GES FU R ELEKTROAKUSTISCH
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Filing date
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Application filed by GEMA GES FU R ELEKTROAKUSTISCHfiledCriticalGEMA GES FU R ELEKTROAKUSTISCH
Application grantedgrantedCritical
Publication of FR893525ApublicationCriticalpatent/FR893525A/fr
H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
H01J9/02—Manufacture of electrodes or electrode systems
H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
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Engineering & Computer Science
(AREA)
Manufacturing & Machinery
(AREA)
FR893525D1942-08-131943-04-14Procédé de fabrication de cathodes à chauffage direct
ExpiredFR893525A
(fr)