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发明名称
EXPANDER
摘要
申请公布号
SU856774(A1)
申请公布日期
1981.08.23
申请号
SU19782597323
申请日期
1978.03.31
申请人
NATAPOV LEONID M
发明人
NATAPOV LEONID M,SU
分类号
B24B39/02;(IPC1-7):B24B39/02
主分类号
B24B39/02
代理机构
代理人
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