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公开(公告)号：US3487865A
公开(公告)日：1970-01-06
申请号：US3487865D
申请日：1967-08-16
Applicant: RUNNION ERNEST E
Inventor： CHAPMAN FREDERIC F , HILL DANIEL
CPC classification number: B27L11/005 , B23D61/021 , B27G13/10 , Y10T407/11 , Y10T407/1902 , Y10T407/1926 , Y10T407/1938
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