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发明名称
Piston ring
摘要
申请公布号
US2606800(A)
申请公布日期
1952.08.12
申请号
US19470783945
申请日期
1947.11.04
申请人
PERFECT CIRCLE CORPORATION
发明人
TEETOR RALPH R.
分类号
F16J9/06;F16J9/20
主分类号
F16J9/06
代理机构
代理人
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地址
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