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发明名称
MULTIPLE DWELLING HOUSE INFORMATION SYSTEM
摘要
申请公布号
JPS6251358(B2)
申请公布日期
1987.10.29
申请号
JP19810113568
申请日期
1981.07.22
申请人
HITACHI CONSTRUCTION MACHINERY
发明人
TAKAHASHI HARUO;HIRANO NOBUTAKA
分类号
E21B12/06;E21B11/00
主分类号
E21B12/06
代理机构
代理人
主权项
地址
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