Foot-operated step-by-step switch,申请号US19470787833-传众专利搜索

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发明名称	Foot-operated step-by-step switch
摘要
申请公布号	US2491748(A)	申请公布日期	1949.12.20
申请号	US19470787833	申请日期	1947.11.24
申请人	CHARLIE MARTINKA;EDRIN MARTINKA;GEORGE MARTINKA;MARTHA MARTINKA;JOHN R. MARTINKA	发明人	MARTINKA JOHN P.
分类号	H01H21/26	主分类号	H01H21/26
代理机构		代理人
主权项
地址

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