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发明名称
Improvements in or relating to the production of tapered artificial filaments
摘要
申请公布号
GB578238(A)
申请公布日期
1946.06.20
申请号
GB19440007969
申请日期
1944.04.28
申请人
E. I. DU PONT DE NEMOURS AND CO.
发明人
分类号
D01D5/20;H04B1/08
主分类号
D01D5/20
代理机构
代理人
主权项
地址
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