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经营范围
发明名称
PIT EXCAVATOR
摘要
申请公布号
JPS61250287(A)
申请公布日期
1986.11.07
申请号
JP19850092551
申请日期
1985.04.30
申请人
KATO SEISAKUSHO:KK
发明人
HAYAMA KEIZO
分类号
E21B3/04;E21B3/00
主分类号
E21B3/04
代理机构
代理人
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