Improvements in and in the manufacture of piston and like packing rings,申请号GB19420016969-传众专利搜索

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发明名称	Improvements in and in the manufacture of piston and like packing rings
摘要
申请公布号	GB558408(A)	申请公布日期	1944.01.04
申请号	GB19420016969	申请日期	1942.11.30
申请人	THE BRITISH PISTON RING COMPANY LIMITED;THOMAS RALPH TWIGGER;JOHN ALAN JUDD	发明人
分类号	C21D1/74;C21D9/40	主分类号	C21D1/74
代理机构		代理人
主权项
地址

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