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公开(公告)号：US3171053A
公开(公告)日：1965-02-23
申请号：US85976459
申请日：1959-12-15
Applicant: SPERRY RAND CORP
Inventor： RUSSELL TARG , MORRIS ETTENBERG
IPC: H01J25/00
CPC classification number: H01J25/005
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公开(公告)号：US2753481A
公开(公告)日：1956-07-03
申请号：US29350152
申请日：1952-06-14
Applicant: SPERRY RAND CORP
Inventor： MORRIS ETTENBERG
IPC: H01J25/36
CPC classification number: H01J25/36
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