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公开(公告)号：US2978603A
公开(公告)日：1961-04-04
申请号：US68777257
申请日：1957-10-02
Applicant: GEN DYNAMICS CORP
Inventor： FITE WADE L , THEODORE BRACKMANN RICHARD
IPC: H01J47/08
CPC classification number: H01J47/08
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