Improvements in or relating to variable speed-gear mechanism,申请号GB19290039619-传众专利搜索

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发明名称	Improvements in or relating to variable speed-gear mechanism
摘要
申请公布号	GB340136(A)	申请公布日期	1930.12.24
申请号	GB19290039619	申请日期	1929.12.27
申请人	P.O.	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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