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发明名称
Piston ring
摘要
申请公布号
US2637607(A)
申请公布日期
1953.05.05
申请号
US19520293895
申请日期
1952.06.17
申请人
SEALED POWER CORPORATION
发明人
OLSON HOLLY M.
分类号
F16J9/06
主分类号
F16J9/06
代理机构
代理人
主权项
地址
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