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经营范围
发明名称
Mixing concrete
摘要
申请公布号
US2303902(A)
申请公布日期
1942.12.01
申请号
US19410389058
申请日期
1941.04.17
申请人
CHAIN BELT COMPANY
发明人
BALL CHARLES F.
分类号
B28C5/42
主分类号
B28C5/42
代理机构
代理人
主权项
地址
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