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发明名称
ADDITIVE TO MOULDING SAND MIXES AND METHOD OF OBTAINING SUCH ADDITIVE
摘要
申请公布号
PL149970(B1)
申请公布日期
1990.04.30
申请号
PL19860259623
申请日期
1986.05.21
申请人
发明人
分类号
B22C1/16;(IPC1-7):B22C1/16
主分类号
B22C1/16
代理机构
代理人
主权项
地址
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