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发明名称
CHEMICAL GROUTING PROPORTIONING PUMPING METHOD AND APPARATUS
摘要
申请公布号
US3604213(A)
申请公布日期
1971.09.14
申请号
USD3604213
申请日期
1969.01.10
申请人
HERBERT LELAND PARSONS
发明人
HERBERT LELAND PARSONS
分类号
E02D3/12;(IPC1-7):E02D3/12
主分类号
E02D3/12
代理机构
代理人
主权项
地址
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