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经营范围
发明名称
HYDRAULIC ROCK DRILL
摘要
申请公布号
JPH03115696(A)
申请公布日期
1991.05.16
申请号
JP19890253181
申请日期
1989.09.27
申请人
KAWANAMI YUTAKA
发明人
TANAKA MASATO
分类号
E21C37/02
主分类号
E21C37/02
代理机构
代理人
主权项
地址
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