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公开(公告)号:US2562927A
公开(公告)日:1951-08-07
申请号:US71893846
申请日:1946-12-28
Applicant: SPERRY CORP
Inventor: ELLIOTT LEVINTHAL
IPC: H01J25/10 , H01J25/12
CPC classification number: H01J25/10 , H01J25/12