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发明名称
INJECTION OF BACK FILLING MATERIAL
摘要
申请公布号
JPS5712797(A)
申请公布日期
1982.01.22
申请号
JP19800086471
申请日期
1980.06.27
申请人
DOKEN SHIZAI KK
发明人
HIRANO TAKASHI
分类号
E21D11/00
主分类号
E21D11/00
代理机构
代理人
主权项
地址
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