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.)
PAUL HINSTIN ET ARMAND LEHMANN
Original Assignee
PAUL HINSTIN ET ARMAND LEHMANN
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 PAUL HINSTIN ET ARMAND LEHMANNfiledCriticalPAUL HINSTIN ET ARMAND LEHMANN
Application grantedgrantedCritical
Publication of FR629551ApublicationCriticalpatent/FR629551A/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
FR629551D1926-05-061926-05-06Perfectionnements aux tubes à vide
ExpiredFR629551A
(fr)