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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbHfiledCriticalFernseh GmbH
Application grantedgrantedCritical
Publication of FR878779ApublicationCriticalpatent/FR878779A/fr
H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
FR878779D1941-01-311942-01-26Procédé pour charger et décharger alternativement des éléments de surface à l'intérieur de tubes à rayon cathodique
ExpiredFR878779A
(fr)
Récipient à rayon corpusculaire, notamment ultra-microscope, à réserve de plaques disposée à l'intérieur du vide et de laquelle une plaque est dégagée à chaquefois pour l'éclairement