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公开(公告)号：US3215868A
公开(公告)日：1965-11-02
申请号：US14665761
申请日：1961-10-20
Applicant: GEN DYNAMICS CORP
Inventor： PIDD ROBERT W , MISSMAN JR ROLLAND A
IPC: H01J45/00
CPC classification number: H01J45/00
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