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发明名称
Procédé d'élaboration de noyaux en sable
摘要
申请公布号
FR1290073(A)
申请公布日期
1962.04.06
申请号
FR19610863240
申请日期
1961.05.29
申请人
发明人
SINGER SIDNEY LIBERTY
分类号
B22C1/22
主分类号
B22C1/22
代理机构
代理人
主权项
地址
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