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发明名称
SEALING RING
摘要
申请公布号
PL151861(B3)
申请公布日期
1990.10.31
申请号
PL19880270830
申请日期
1988.02.24
申请人
发明人
分类号
F16J15/00;F16J15/32;(IPC1-7):F16J9/00
主分类号
F16J15/00
代理机构
代理人
主权项
地址
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