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经营范围
发明名称
Moistureproof material and process of making same
摘要
申请公布号
US2108804(A)
申请公布日期
1938.02.22
申请号
US19340717938
申请日期
1934.03.29
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
FINZEL THERON G.;DREW DONALD E.
分类号
D21H21/26
主分类号
D21H21/26
代理机构
代理人
主权项
地址
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