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发明名称
摘要
申请公布号
DE2049826(A1)
申请公布日期
1971.12.09
申请号
DE19702049826
申请日期
1970.10.10
申请人
发明人
分类号
B22D41/04;B22D11/10;(IPC1-7):B22D11/10
主分类号
B22D41/04
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代理人
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