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发明名称
Piston ring
摘要
申请公布号
US2634179(A)
申请公布日期
1953.04.07
申请号
US19490118423
申请日期
1949.09.28
申请人
HAVERLY BYRON H
发明人
HAVERLY BYRON H.
分类号
F16J9/08
主分类号
F16J9/08
代理机构
代理人
主权项
地址
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