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发明名称
PRINTED CIRCUIT BOARD BORING MACHINE AND AUTOMATIC DRILL REPLACING DEVICE FOR IT
摘要
申请公布号
JPH04111707(A)
申请公布日期
1992.04.13
申请号
JP19900230232
申请日期
1990.08.31
申请人
HITACHI SEIKO LTD
发明人
MURAKAMI TETSUO
分类号
B23Q3/157;B23B41/00;B23Q3/155;H05K3/00
主分类号
B23Q3/157
代理机构
代理人
主权项
地址
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