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经营范围
发明名称
Feeding mechanism
摘要
申请公布号
US2385946(A)
申请公布日期
1945.10.02
申请号
US19420452923
申请日期
1942.07.30
申请人
WORTHINGTON PUMP AND MACHINERY CORPORATION
发明人
SCHORER OTTO J.
分类号
E21B19/084
主分类号
E21B19/084
代理机构
代理人
主权项
地址
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