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发明名称
摘要
申请公布号
SU529909(A1)
申请公布日期
1976.09.30
申请号
SU19731965356
申请日期
1973.10.10
申请人
发明人
分类号
B23B31/20;(IPC1-7):B23B31/20
主分类号
B23B31/20
代理机构
代理人
主权项
地址
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