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发明名称
Carbon ring
摘要
申请公布号
US2272455(A)
申请公布日期
1942.02.10
申请号
US19390262503
申请日期
1939.03.17
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
WITHINGTON CLYDE W.
分类号
F16J15/30
主分类号
F16J15/30
代理机构
代理人
主权项
地址
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