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公开(公告)号：US1014769A
公开(公告)日：1912-01-16
申请号：US1911622258
申请日：1911-04-20
Applicant: NORTH AND JUDD MFG COMPANY , MELCHIOR JOSEPH E
Inventor： MELCHIOR JOSEPH E
CPC classification number: B68B5/00
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