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公开(公告)号：US3503294A
公开(公告)日：1970-03-31
申请号：US3503294D
申请日：1968-02-02
Applicant: JOSEPH VINCIGUERRA , JAMES J HENIGAN
Inventor： VINCIGUERRA JOSEPH , HENIGAN JAMES J
CPC classification number: B27F5/02 , B23D49/00 , B23D49/003 , B23D49/11 , Y10T83/8828 , Y10T83/8876 , Y10T408/89 , Y10T408/96
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