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发明名称
Shaft seal apparatus
摘要
申请公布号
US2639171(A)
申请公布日期
1953.05.19
申请号
US19500166723
申请日期
1950.06.07
申请人
WESTINGHOUSE ELECTRIC CORPORATION
发明人
JOHNSON DOUGLAS
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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