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公开(公告)号：US3297897A
公开(公告)日：1967-01-10
申请号：US26690163
申请日：1963-03-21
Applicant: RADIOCHEMISTRY INC
Inventor： LEWIS JAMES E , GRAVES BRUCE B
IPC: H01J47/06
CPC classification number: H01J47/06
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