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发明名称
摘要
申请公布号
DE2520750(B2)
申请公布日期
1981.05.14
申请号
DE19752520750
申请日期
1975.05.09
申请人
HITACHI, LTD., TOKYO, JP
发明人
GOTO, KATSUO, IBARAKI, JP;YOSHIHARA, SYUZOU, HITACHI, JP
分类号
B23H9/14;(IPC1-7):B23P1/12
主分类号
B23H9/14
代理机构
代理人
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