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发明名称
Draw roll
摘要
申请公布号
US3020621(A)
申请公布日期
1962.02.13
申请号
US19590857077
申请日期
1959.12.03
申请人
E. I. DU PONT DE NEMOURS AND COMPANY
发明人
SACKS DAVID
分类号
D02J1/22
主分类号
D02J1/22
代理机构
代理人
主权项
地址
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