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发明名称
摘要
申请公布号
FR2071047(A5)
申请公布日期
1971.09.17
申请号
FR19690043516
申请日期
1969.12.16
申请人
PONT A MOUSSON CENT RECH
发明人
分类号
B22D39/00;B22D;B22D5/02;B22D37/00;(IPC1-7):B22D47/00;B22D33/00;B22D35/00
主分类号
B22D39/00
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