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发明名称
Submersible sump pump
摘要
申请公布号
US2720841(A)
申请公布日期
1955.10.18
申请号
US19540447712
申请日期
1954.08.04
申请人
WEIL PUMP CO.
发明人
FINZEL HERMAN
分类号
F04D13/06
主分类号
F04D13/06
代理机构
代理人
主权项
地址
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