Bobbin-cases for sewing machines,申请号US19510233618-传众专利搜索

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发明名称	Bobbin-cases for sewing machines
摘要
申请公布号	US2813500(A)	申请公布日期	1957.11.19
申请号	US19510233618	申请日期	1951.06.26
申请人	THE SINGER MANUFACTURING COMPANY	发明人	GOOSMAN HERBERT J.;GRAESSER DAVID A.
分类号	D05B57/26	主分类号	D05B57/26
代理机构		代理人
主权项
地址

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