Improvements in or relating to change-speed gearing,申请号GB19290004685-传众专利搜索

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发明名称	Improvements in or relating to change-speed gearing
摘要
申请公布号	GB306139(A)	申请公布日期	1930.08.11
申请号	GB19290004685	申请日期	1929.02.12
申请人	SVEN AXEL HOLMGREN	发明人
分类号	F16H61/02	主分类号	F16H61/02
代理机构		代理人
主权项
地址

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