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经营范围
发明名称
Flexible piston ring
摘要
申请公布号
US2645536(A)
申请公布日期
1953.07.14
申请号
US19500140300
申请日期
1950.01.24
申请人
THOMPSON PRODUCTS, INC.
发明人
PRASSE HERBERT F.
分类号
F16J9/06;F16J9/14;F16J9/20
主分类号
F16J9/06
代理机构
代理人
主权项
地址
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