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发明名称
Improvements in or relating to oil scraper rings for oil engines and the like
摘要
申请公布号
GB912440(A)
申请公布日期
1962.12.05
申请号
GB19600042059
申请日期
1960.12.07
申请人
HUGH RHYS WILLIAMS
发明人
分类号
F16J9/20
主分类号
F16J9/20
代理机构
代理人
主权项
地址
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