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发明名称
ANGLED VALVE SEAT CLOSURE
摘要
申请公布号
CA812597(A)
申请公布日期
1969.05.13
申请号
CAD812597
申请日期
申请人
THE POLY-SEAL CORPORATION
发明人
THOMAS J. HEALY
分类号
主分类号
代理机构
代理人
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地址
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