Spring coiling device,申请号US19500165623-传众专利搜索

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发明名称	Spring coiling device
摘要
申请公布号	US2650638(A)	申请公布日期	1953.09.01
申请号	US19500165623	申请日期	1950.06.02
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人	JOHNSON CURT I.;NORD JAMES A.
分类号	B21F3/04	主分类号	B21F3/04
代理机构		代理人
主权项
地址

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