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经营范围
发明名称
Rotary pump, motor, and the like
摘要
申请公布号
US2685256(A)
申请公布日期
1954.08.03
申请号
US19510259934
申请日期
1951.12.05
申请人
HUMPHREYS MARION W
发明人
HUMPHREYS MARION W.
分类号
F01C1/07
主分类号
F01C1/07
代理机构
代理人
主权项
地址
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