Rate change device,申请号US19310523426-传众专利搜索

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发明名称	Rate change device
摘要
申请公布号	US1977311(A)	申请公布日期	1934.10.16
申请号	US19310523426	申请日期	1931.03.18
申请人	KEARNEY & TRECKER CORPORATION	发明人	KEARNEY EDWARD J.;CONDON ROBERT S.
分类号	B23Q5/14	主分类号	B23Q5/14
代理机构		代理人
主权项
地址

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