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公开(公告)号：US2678403A
公开(公告)日：1954-05-11
申请号：US66688046
申请日：1946-05-03
Applicant: US NAVY
Inventor： GERMESHAUSEN KENNETH J
CPC classification number: H01J17/56 , H01J17/066 , H01J17/40 , H01J17/46 , H01J2893/0066 , H01J2893/0067
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