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发明名称
Synthetic molding material and method of forming same
摘要
申请公布号
US1770687(A)
申请公布日期
1930.07.15
申请号
US19290353695
申请日期
1929.04.08
申请人
DE WITT CLYDE C
发明人
WITT CLYDE C. DE
分类号
B22C1/18
主分类号
B22C1/18
代理机构
代理人
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地址
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