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发明名称
Method and apparatus for handling concrete
摘要
申请公布号
US2315915(A)
申请公布日期
1943.04.06
申请号
US19410421112
申请日期
1941.12.01
申请人
WHITE CECIL J
发明人
WHITE CECIL J.
分类号
E01C19/50;E01C23/02
主分类号
E01C19/50
代理机构
代理人
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