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经营范围
发明名称
BORING DEVICE
摘要
申请公布号
JPS621995(A)
申请公布日期
1987.01.07
申请号
JP19850138298
申请日期
1985.06.25
申请人
TEKKEN KENSETSU CO LTD
发明人
MAKATA KAZUO;SHOJI YOSHIMICHI;AOKI YOSHIHARU
分类号
E21B10/56;B25D17/02;E21B10/32;E21B10/64;E21D9/04;E21D9/08
主分类号
E21B10/56
代理机构
代理人
主权项
地址
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