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经营范围
发明名称
Procédé pour améliorer la conductibité thermique des sables de fonderie, permettant l'utilisation en fonderie de sables quelconques
摘要
申请公布号
FR828480(A)
申请公布日期
1938.05.18
申请号
FRD828480
申请日期
1937.01.29
申请人
发明人
JULES RICHARD RENE, FRANCOIS,
分类号
B22C1/02
主分类号
B22C1/02
代理机构
代理人
主权项
地址
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