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发明名称
Rotary machine
摘要
申请公布号
US1976207(A)
申请公布日期
1934.10.09
申请号
US19330655212
申请日期
1933.02.04
申请人
THE NATIONAL SUPERIOR COMPANY
发明人
ZERBE LEWIS EMANUEL
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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