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发明名称
Reversible terracing machine
摘要
申请公布号
US2748507(A)
申请公布日期
1956.06.05
申请号
US19500199851
申请日期
1950.12.08
申请人
APPLETON PAUL W
发明人
APPLETON PAUL 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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