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发明名称
VALVE AND PLUG SEALING MEANS
摘要
申请公布号
CA621740(A)
申请公布日期
1961.06.13
申请号
CAD621740
申请日期
申请人
EDWARD M. SMITH
发明人
EDWARD M. SMITH
分类号
主分类号
代理机构
代理人
主权项
地址
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