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公开(公告)号：US2965787A
公开(公告)日：1960-12-20
申请号：US82701759
申请日：1959-07-14
Applicant: BOMAC LAB INC
Inventor： ALEXANDER HERBERT C , BUCKLEY CORNELIUS J
IPC: H01J17/04
CPC classification number: H01J17/04
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