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发明名称
SEALING RINGS FOR VALVES
摘要
申请公布号
CA630989(A)
申请公布日期
1961.11.14
申请号
CAD630989
申请日期
申请人
SEETRU LIMITED
发明人
OTTO H. VARGA
分类号
主分类号
代理机构
代理人
主权项
地址
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