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发明名称
Improvements relating to cement or concrete guns
摘要
申请公布号
GB639690(A)
申请公布日期
1950.07.05
申请号
GB19470035234
申请日期
1947.12.31
申请人
ERIK BJORN NIMSKOV;BENT MOLLER
发明人
分类号
E04F21/12
主分类号
E04F21/12
代理机构
代理人
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