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经营范围
发明名称
MOULDING SAND
摘要
申请公布号
PL108307(B1)
申请公布日期
1980.04.30
申请号
PL19750186070
申请日期
1975.12.29
申请人
发明人
分类号
B22C1/22;C08L61/32;(IPC1-7):B22C1/22
主分类号
B22C1/22
代理机构
代理人
主权项
地址
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