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经营范围
发明名称
Improvements in or relating to apparatus for filling disused mine workings and the like
摘要
申请公布号
GB330683(A)
申请公布日期
1930.06.19
申请号
GB19290010497
申请日期
1929.04.04
申请人
WILHELM SCHUERMANN;GUTEHOFFNUNGSHUETTE OBERHAUSEN AKTIENGESELLSCHAFT
发明人
分类号
E21F15/06
主分类号
E21F15/06
代理机构
代理人
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