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经营范围
发明名称
Piston ring
摘要
申请公布号
US1970892(A)
申请公布日期
1934.08.21
申请号
US19320600314
申请日期
1932.03.21
申请人
C. LEE COOK MANUFACTURING COMPANY
发明人
KIRN ROBERT E.;DURHAM FRED D.
分类号
F16J9/16
主分类号
F16J9/16
代理机构
代理人
主权项
地址
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