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经营范围
发明名称
Tractor boom crane
摘要
申请公布号
US1765295(A)
申请公布日期
1930.06.17
申请号
US19270209874
申请日期
1927.08.01
申请人
BECKMAN FRED G
发明人
BECKMAN FRED G.
分类号
B66C23/44
主分类号
B66C23/44
代理机构
代理人
主权项
地址
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