Improvements relating to articles having helically grooved surfaces,申请号GB19420012085-传众专利搜索

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发明名称	Improvements relating to articles having helically grooved surfaces
摘要
申请公布号	GB557769(A)	申请公布日期	1943.12.03
申请号	GB19420012085	申请日期	1942.08.27
申请人	WILMOT-BREEDEN LIMITED;CYRIL HEATH STEPHENSON	发明人
分类号	B64C13/02	主分类号	B64C13/02
代理机构		代理人
主权项
地址

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