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公开(公告)号：US3297901A
公开(公告)日：1967-01-10
申请号：US37280464
申请日：1964-06-05
Applicant: LITTON INDUSTRIES INC
Inventor： MACDONALD KENNETH A , SMITH JOSEPH A
IPC: H01J23/05
CPC classification number: H01J23/05
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