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发明名称
Improvements in methods of producing moulds for cire-perdue precision casting
摘要
申请公布号
GB741601(A)
申请公布日期
1955.12.07
申请号
GB19520017612
申请日期
1952.07.11
申请人
REGIE NATIONALE DES USINES RENAULT
发明人
分类号
B22C9/04
主分类号
B22C9/04
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代理人
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