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发明名称
DRILLING RIG
摘要
申请公布号
JPH01299994(A)
申请公布日期
1989.12.04
申请号
JP19880129149
申请日期
1988.05.26
申请人
TONE BORING CO
发明人
HASHIMOTO TAKASHI;USAMI SHIGEKUNI;MURAKAMI ITARU;YAMAZAKI HARUO
分类号
E21B43/00
主分类号
E21B43/00
代理机构
代理人
主权项
地址
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