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Inventor
FRANK BERTHOLD
DE
2 patents
Patents
2 patents
US4533852A
Aug 6, 1985
Method of manufacturing a thermionic cathode and thermionic cathode manufactured by means of said method
PHILIPS CORP
30 citations
90
US3979196A
Sep 7, 1976
Method for the hot-working of glass
PHILIPS CORP
36 citations
86