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经营范围
发明名称
Concrete placing apparatus
摘要
申请公布号
US2150326(A)
申请公布日期
1939.03.14
申请号
US19360101007
申请日期
1936.09.16
申请人
CORWILL JACKSON
发明人
JACKSON CORWILL
分类号
E01C19/40
主分类号
E01C19/40
代理机构
代理人
主权项
地址
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