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发明名称
Automatic self-aligning two-way plow
摘要
申请公布号
US2900032(A)
申请公布日期
1959.08.18
申请号
US19560600870
申请日期
1956.07.30
申请人
ALICE MARIAN MELLEN
发明人
MELLEN WILLIAM FISK
分类号
A01B3/40;A01B63/02
主分类号
A01B3/40
代理机构
代理人
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