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发明名称
Sub-surface plows
摘要
申请公布号
US2762286(A)
申请公布日期
1956.09.11
申请号
US19530395502
申请日期
1953.12.01
申请人
DORSCH NEAL M
发明人
DORSCH NEAL M.
分类号
A01B15/02
主分类号
A01B15/02
代理机构
代理人
主权项
地址
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