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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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
Priority claimed from NL6505085Aexternal-prioritypatent/NL150609B/xx
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Priority to FR58733ApriorityCriticalpatent/FR1477155A/fr
Application grantedgrantedCritical
Publication of FR1477155ApublicationCriticalpatent/FR1477155A/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
H01J1/30—Cold cathodes, e.g. field-emissive cathode
H01J1/308—Semiconductor cathodes, e.g. cathodes with PN junction layers
FR58733A1965-04-221966-04-22Dispositif pour engendrer un courant d'électrons
ExpiredFR1477155A
(fr)