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发明名称
Apparatus for working surfaces
摘要
申请公布号
US2278806(A)
申请公布日期
1942.04.07
申请号
US19400349668
申请日期
1940.08.02
申请人
TILTON CLIFFORD W
发明人
TILTON CLIFFORD W.
分类号
E02F3/76
主分类号
E02F3/76
代理机构
代理人
主权项
地址
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