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.)
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Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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Filing date
Publication date
Application filed by Compagnie Francaise Thomson Houston SAfiledCriticalCompagnie Francaise Thomson Houston SA
Application grantedgrantedCritical
Publication of FR34278EpublicationCriticalpatent/FR34278E/fr
H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
H01J19/68—Specified gas introduced into the tube at low pressure, e.g. for reducing or influencing space charge
FR34278D1927-08-261927-08-26Perfectionnements aux tubes à décharge électronique, et aux moyens d'éviter des fuites électriques dans ces tubes
ExpiredFR34278E
(fr)