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经营范围
发明名称
Improvements in piston rings
摘要
申请公布号
GB958472(A)
申请公布日期
1964.05.21
申请号
GB19630003194
申请日期
1963.01.25
申请人
SEALED POWER CORPORATION
发明人
分类号
F16J9/06;F16J9/20
主分类号
F16J9/06
代理机构
代理人
主权项
地址
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