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发明名称
Hoisting device for line poles
摘要
申请公布号
US2493687(A)
申请公布日期
1950.01.03
申请号
US19480037113
申请日期
1948.07.06
申请人
发明人
MOTT HARVEY C.
分类号
B66C23/20
主分类号
B66C23/20
代理机构
代理人
主权项
地址
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