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发明名称
Method for mixing concrete by gravitational vibration
摘要
申请公布号
US2646975(A)
申请公布日期
1953.07.28
申请号
US19510220224
申请日期
1951.04.10
申请人
HANS WALDVOGEL
发明人
WALDVOGEL HANS
分类号
B01F11/00
主分类号
B01F11/00
代理机构
代理人
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