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发明名称
Plow
摘要
申请公布号
US1761320(A)
申请公布日期
1930.06.03
申请号
US19270233895
申请日期
1927.11.17
申请人
WARD CHARLES C
发明人
WARD CHARLES C.
分类号
E01B27/02
主分类号
E01B27/02
代理机构
代理人
主权项
地址
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