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经营范围
发明名称
DRILLING DEVICE
摘要
申请公布号
JPH04343993(A)
申请公布日期
1992.11.30
申请号
JP19910148029
申请日期
1991.05.22
申请人
YAMAMOTO TEKKOSHO:KK;CHUGOKU BAKUSAI KOJI KK
发明人
TANABE YASUHISA;FUJII SHOJI
分类号
E21B7/02;E21B15/00;E21B19/08;E21C37/02
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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