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Application filed by Lorenz C AgfiledCriticalLorenz C Ag
Publication of CH217608ApublicationCriticalpatent/CH217608A/de
H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
CH217608D1939-03-231940-03-11Elektronenröhre für hohe Frequenzen und Verfahren zu deren Herstellung.
CH217608A
(de)