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发明名称
Pressure switch
摘要
申请公布号
US1890009(A)
申请公布日期
1932.12.06
申请号
US19300474449
申请日期
1930.08.11
申请人
SQUARE D COMPANY
发明人
VALKENBURG HERMON L. VAN
分类号
主分类号
代理机构
代理人
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