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发明名称
Rotary machine
摘要
申请公布号
US1945876(A)
申请公布日期
1934.02.06
申请号
US19280257823
申请日期
1928.02.29
申请人
THE NATIONAL SUPPLY COMPANY
发明人
YOUNG FORREST J.
分类号
E21B19/10
主分类号
E21B19/10
代理机构
代理人
主权项
地址
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