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经营范围
发明名称
Cross connection eliminator
摘要
申请公布号
US2574488(A)
申请公布日期
1951.11.13
申请号
US19450621964
申请日期
1945.10.12
申请人
LANGDON JESSE D
发明人
LANGDON JESSE D.
分类号
E03D3/04
主分类号
E03D3/04
代理机构
代理人
主权项
地址
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