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公开(公告)号：US1211677A
公开(公告)日：1917-01-09
申请号：US1904228240
申请日：1904-10-12
Applicant: BARBER COLMAN CO , COLMAN HOWARD D , LUTHER L MILLER , HENRY A SEVERSON
Inventor： COLMAN HOWARD D
CPC classification number: D03J1/14
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