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经营范围
发明名称
BACKKFILLING METHOD
摘要
申请公布号
JPS55122998(A)
申请公布日期
1980.09.22
申请号
JP19790029485
申请日期
1979.03.13
申请人
SANYO CHEMICAL IND LTD
发明人
SAJI TOSHIHIRO;NAGATA YUUSABUROU
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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