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公开(公告)号：US3451523A
公开(公告)日：1969-06-24
申请号：US3451523D
申请日：1967-07-14
Applicant: MANDREL INDUSTRIES
Inventor： EVANS JOHN S JR , MCGHEE JAMES E
IPC: B65G47/244 , B65G47/24 , B65G47/80
CPC classification number: B65G47/244
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