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公开(公告)号：US1755486A
公开(公告)日：1930-04-22
申请号：US38001329
申请日：1929-07-22
Applicant: ODELL ROSS E
Inventor： ODELL ROSS E
CPC classification number: B25B13/08 , B25B13/481 , B25G1/063
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