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经营范围
发明名称
Improvements in or relating to devices for swelling and stretching artificial silk, threads, yarns, films and the like
摘要
申请公布号
GB362418(A)
申请公布日期
1931.11.30
申请号
GB19300016674
申请日期
1930.05.29
申请人
PAUL EHRENSTEIN
发明人
分类号
C04B40/00;D02J1/22
主分类号
C04B40/00
代理机构
代理人
主权项
地址
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