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经营范围
发明名称
PNEUMATIC SOIL EXCAVATOR
摘要
申请公布号
JPH05156884(A)
申请公布日期
1993.06.22
申请号
JP19910350262
申请日期
1991.12.09
申请人
HAKKO CO LTD
发明人
KOGA MOTOYUKI;SATO TORU
分类号
E21B7/00;E21B7/18
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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