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公开(公告)号：US2067966A
公开(公告)日：1937-01-19
申请号：US2153435
申请日：1935-05-15
Applicant: RCA CORP
Inventor： HANS KLEMPERER
IPC: H01J3/02
CPC classification number: H01J3/025 , H01J2893/0061 , Y10S29/066
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