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.)
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.)
GEMA GES FU R ELEKTROAKUSTISCH
Original Assignee
GEMA GES FU R ELEKTROAKUSTISCH
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 GEMA GES FU R ELEKTROAKUSTISCHfiledCriticalGEMA GES FU R ELEKTROAKUSTISCH
Application grantedgrantedCritical
Publication of FR900571ApublicationCriticalpatent/FR900571A/fr
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
FR900571D1942-12-311943-12-15Cathode incandescente pour lampes à ondes ultra courtes
ExpiredFR900571A
(fr)