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发明名称
Grading machine
摘要
申请公布号
US1754376(A)
申请公布日期
1930.04.15
申请号
US19280256266
申请日期
1928.02.23
申请人
LITTLE RED WAGON MFG. CO.
发明人
THOMAS ARTHUR C.
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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