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发明名称
Mobile spreader
摘要
申请公布号
US1892566(A)
申请公布日期
1932.12.27
申请号
US19310580141
申请日期
1931.12.10
申请人
COPPOCK FRED D
发明人
COPPOCK FRED D.
分类号
E01C19/20
主分类号
E01C19/20
代理机构
代理人
主权项
地址
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