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发明名称
Piston ring
摘要
申请公布号
US2369263(A)
申请公布日期
1945.02.13
申请号
US19380222325
申请日期
1938.08.01
申请人
THE PERFECT CIRCLE COMPANY
发明人
TEETOR MAEY O.
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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