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发明名称
Sand trap for pump by-pass line to motor control switch diaphragm
摘要
申请公布号
US3114320(A)
申请公布日期
1963.12.17
申请号
US19610158382
申请日期
1961.12.11
申请人
HUGHES GEORGE W
发明人
HUGHES GEORGE W.
分类号
F04D15/00;F04D29/70
主分类号
F04D15/00
代理机构
代理人
主权项
地址
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