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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RTX Corp
Original Assignee
United Aircraft Corp
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 US235214Aexternal-prioritypatent/US3156811A/en
Application filed by United Aircraft CorpfiledCriticalUnited Aircraft Corp
Priority to FR951928ApriorityCriticalpatent/FR1417120A/fr
Application grantedgrantedCritical
Publication of FR1417120ApublicationCriticalpatent/FR1417120A/fr
H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
H01J37/30—Electron-beam or ion-beam tubes for localised treatment of objects
H01J37/301—Arrangements enabling beams to pass between regions of different pressure
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Chemical & Material Sciences
(AREA)
Analytical Chemistry
(AREA)
FR951928A1962-11-051963-10-26Méthode d'obturation gazeuse dans un appareil pour travailler des matières au moyen d'un faisceau de particules chargées
ExpiredFR1417120A
(fr)
Procédé et appareillage pour la focalisation automatique du faisceau de particules électrisées dans les instruments destinés au travail d'un matériau au moyen d'un faisceau de particules électrisées