Improvements in or relating to change speed devices for cycles,申请号GB19330030186-传众专利搜索

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发明名称	Improvements in or relating to change speed devices for cycles
摘要
申请公布号	GB427648(A)	申请公布日期	1935.04.29
申请号	GB19330030186	申请日期	1933.10.31
申请人	EDWIN GREGORY	发明人
分类号	B62M9/124	主分类号	B62M9/124
代理机构		代理人
主权项
地址

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