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经营范围
发明名称
HYDRAULIC PERCUSSION DEVICE
摘要
申请公布号
JPS5228401(A)
申请公布日期
1977.03.03
申请号
JP19750104586
申请日期
1975.08.29
申请人
KOUKEN SHISUI KOUGIYOU KK
发明人
KUMAMOTO KEIJI
分类号
E21B4/14
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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