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发明名称
Improvements in or relating to piston rings or piston ring assemblies
摘要
申请公布号
GB555348(A)
申请公布日期
1943.08.18
申请号
GB19420003024
申请日期
1942.03.09
申请人
HEPWORTH & GRANDAGE LIMITED;HERBERT GARTH
发明人
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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