Change speed device,申请号US19390260698-传众专利搜索

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发明名称	Change speed device
摘要
申请公布号	US2222813(A)	申请公布日期	1940.11.26
申请号	US19390260698	申请日期	1939.03.09
申请人	HALE JESSE W	发明人	HALE JESSE W.
分类号	F16H3/66;F16H61/02	主分类号	F16H3/66
代理机构		代理人
主权项
地址

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