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发明名称
Rotary machine
摘要
申请公布号
US2259055(A)
申请公布日期
1941.10.14
申请号
US19390297688
申请日期
1939.10.03
申请人
THE NATIONAL SUPPLY COMPANY
发明人
ZERBE LEWIS E.;YOUNG FORREST J.
分类号
E21B3/04
主分类号
E21B3/04
代理机构
代理人
主权项
地址
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