Method of threading rolling mills,申请号US19390280042-传众专利搜索

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发明名称	Method of threading rolling mills
摘要
申请公布号	US2316067(A)	申请公布日期	1943.04.06
申请号	US19390280042	申请日期	1939.06.20
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	HICKMAN CLARENCE N.
分类号	B21B1/16	主分类号	B21B1/16
代理机构		代理人
主权项
地址

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