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发明名称
Yarn production
摘要
申请公布号
US2340611(A)
申请公布日期
1944.02.01
申请号
US19420443907
申请日期
1942.05.21
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
NEFF WILLIAM E.
分类号
B65H54/78
主分类号
B65H54/78
代理机构
代理人
主权项
地址
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