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发明名称
Piston ring
摘要
申请公布号
US1861716(A)
申请公布日期
1932.06.07
申请号
US19300503843
申请日期
1930.12.20
申请人
THE AMERICAN HAMMERED PISTON RING COMPANY
发明人
PETRE ALEXANDER P.
分类号
F16J9/14
主分类号
F16J9/14
代理机构
代理人
主权项
地址
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