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发明名称
Conducting hopper for concrete aggregate
摘要
申请公布号
US1925541(A)
申请公布日期
1933.09.05
申请号
US19300442746
申请日期
1930.04.09
申请人
ROADS CONSTRUCTION COMPANY, LTD.
发明人
NOBLE BERT
分类号
B28C7/00
主分类号
B28C7/00
代理机构
代理人
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