Improvements in automatic change speed devices,申请号GB19380013851-传众专利搜索

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发明名称	Improvements in automatic change speed devices
摘要
申请公布号	GB508739(A)	申请公布日期	1939.07.05
申请号	GB19380013851	申请日期	1938.05.09
申请人	SOCIETE FRANCOIS CONTE	发明人
分类号	F16H61/02	主分类号	F16H61/02
代理机构		代理人
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地址

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