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公开(公告)号：US3078725A
公开(公告)日：1963-02-26
申请号：US86320559
申请日：1959-12-31
Applicant: IBM
Inventor： JIMERSON JR LE ROY S , WATSON ROBERT A
IPC: G01P15/13
CPC classification number: G01P15/132
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