Magnetic chuck and circuits therefor,申请号US19290374521-传众专利搜索

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发明名称	Magnetic chuck and circuits therefor
摘要
申请公布号	US1816888(A)	申请公布日期	1931.08.04
申请号	US19290374521	申请日期	1929.06.28
申请人	ARTER GRINDING MACHINE COMPANY	发明人	ARTER WILLIAM;ARTER HARRY;WEBSTER SAMUEL T.
分类号	B23Q3/154	主分类号	B23Q3/154
代理机构		代理人
主权项
地址

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