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发明名称
V-type ditching machine adjustment
摘要
申请公布号
US2669040(A)
申请公布日期
1954.02.16
申请号
US19460697489
申请日期
1946.09.17
申请人
GREGERSON OWEN L
发明人
GREGERSON OWEN L.
分类号
E02F5/02
主分类号
E02F5/02
代理机构
代理人
主权项
地址
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