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发明名称
METHOD FOR IMPROVING GROUND
摘要
申请公布号
JPH0416617(A)
申请公布日期
1992.01.21
申请号
JP19900122457
申请日期
1990.05.11
申请人
NIPPON CONCRETE IND CO LTD
发明人
WATANABE OSAMU
分类号
E21B10/32;E02D3/12
主分类号
E21B10/32
代理机构
代理人
主权项
地址
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