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发明名称
AUTOMATIC PROPELLING DRIVING DEVICE FOR CONCRETE BORING
摘要
申请公布号
JPS57158487(A)
申请公布日期
1982.09.30
申请号
JP19810042655
申请日期
1981.03.24
申请人
IWASADA NAOKO
发明人
IWASADA NAOKO
分类号
E21B25/04;E21B3/00
主分类号
E21B25/04
代理机构
代理人
主权项
地址
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