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发明名称
Manufacture or treatment of artificial materials
摘要
申请公布号
US2091967(A)
申请公布日期
1937.09.07
申请号
US19340709335
申请日期
1934.02.01
申请人
HENRY DREYFUS
发明人
DREYFUS HENRY
分类号
D01F2/28
主分类号
D01F2/28
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代理人
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