Permanent magnetic chuck,申请号US19420455495-传众专利搜索

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发明名称	Permanent magnetic chuck
摘要
申请公布号	US2359293(A)	申请公布日期	1944.10.03
申请号	US19420455495	申请日期	1942.08.20
申请人	O. S. WALKER CO. INC.	发明人	BEECHLYN JOHN 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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