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发明名称
Road material spreader
摘要
申请公布号
US1913897(A)
申请公布日期
1933.06.13
申请号
US19310512104
申请日期
1931.01.29
申请人
PORTERFIELD CLYDE G
发明人
PORTERFIELD CLYDE G.
分类号
E01C19/18
主分类号
E01C19/18
代理机构
代理人
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