Improvements in or relating to piston rings and piston ring assemblies,申请号GB19420009186-传众专利搜索

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发明名称	Improvements in or relating to piston rings and piston ring assemblies
摘要
申请公布号	GB551855(A)	申请公布日期	1943.03.12
申请号	GB19420009186	申请日期	1942.07.20
申请人	ELIJAH HEPWORTH;WILLIAM HEPWORTH;NORMAN CRABTREE BREARLEY	发明人
分类号	F16J9/24	主分类号	F16J9/24
代理机构		代理人
主权项
地址

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