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发明名称
Transmitted power mover
摘要
申请公布号
US2685430(A)
申请公布日期
1954.08.03
申请号
US19520267673
申请日期
1952.01.22
申请人
HENKE OSCAR A
发明人
HENKE OSCAR A.
分类号
E21B19/086
主分类号
E21B19/086
代理机构
代理人
主权项
地址
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