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公开(公告)号：US3099905A
公开(公告)日：1963-08-06
申请号：US7932860
申请日：1960-12-29
Applicant: THOR POWER TOOL CO
Inventor： REBECHINI PETER G , LARSON PHILIP E
CPC classification number: B24B55/02 , B23Q1/0027 , B24B23/028
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