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发明名称
Two-way plow construction
摘要
申请公布号
US2655851(A)
申请公布日期
1953.10.20
申请号
US19490109090
申请日期
1949.08.08
申请人
PURSCHE HARRY A
发明人
PURSCHE HARRY A.
分类号
A01B3/30
主分类号
A01B3/30
代理机构
代理人
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地址
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