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公开(公告)号：US3449822A
公开(公告)日：1969-06-17
申请号：US3449822D
申请日：1967-01-17
Applicant: WARNER SWASEY CO
Inventor： LAUMANN EDWARD F , JACOB HARRY J JR
CPC classification number: B23Q3/15773 , Y10T483/132 , Y10T483/1764 , Y10T483/1809 , Y10T483/1827
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