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公开(公告)号：US648211A
公开(公告)日：1900-04-24
申请号：US1899706658
申请日：1899-02-24
Applicant: ALBERT D FIELD , MARGGRAFF FREDRICK
Inventor： MARGGRAFF FREDRICK
CPC classification number: B65H5/008 , Y10T83/4488 , Y10T83/6566 , Y10T83/6572
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