Automatic clamp opening devices for sewing machines,申请号US19540466034-传众专利搜索

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发明名称	Automatic clamp opening devices for sewing machines
摘要
申请公布号	US2849971(A)	申请公布日期	1958.09.02
申请号	US19540466034	申请日期	1954.11.01
申请人	THE SINGER MANUFACTURING COMPANY	发明人	SWEET RAY D.;EDWARDS WILLIAM J.
分类号	D05B3/14;G05G21/00	主分类号	D05B3/14
代理机构		代理人
主权项
地址

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