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经营范围
发明名称
Tillage implement
摘要
申请公布号
US1885763(A)
申请公布日期
1932.11.01
申请号
US19300505416
申请日期
1930.12.29
申请人
B. F. AVERY & SONS
发明人
RAY CHARLES T.
分类号
A01B13/02
主分类号
A01B13/02
代理机构
代理人
主权项
地址
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