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发明名称
BALANCED WELL PUMP
摘要
申请公布号
CA515385(A)
申请公布日期
1955.08.09
申请号
CAD515385
申请日期
申请人
WILLIAM H. PORTER
发明人
WILLIAM H. PORTER
分类号
主分类号
代理机构
代理人
主权项
地址
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