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发明名称
Piston ring
摘要
申请公布号
US2404140(A)
申请公布日期
1946.07.16
申请号
US19440516828
申请日期
1944.01.03
申请人
MCFALL THURLOW E
发明人
MCFALL THURLOW E.
分类号
F16J9/06;F16J9/20
主分类号
F16J9/06
代理机构
代理人
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