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GEMA GES fur ELEKTROAKUSTISCHE
Original Assignee
GEMA GES fur ELEKTROAKUSTISCHE
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Filing date
Publication date
Application filed by GEMA GES fur ELEKTROAKUSTISCHEfiledCriticalGEMA GES fur ELEKTROAKUSTISCHE
Application grantedgrantedCritical
Publication of FR906833ApublicationCriticalpatent/FR906833A/en
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
H01J1/15—Cathodes heated directly by an electric current
FR906833D1943-12-171944-08-28
Heating filament for lamp cathode
ExpiredFR906833A
(en)