Presser-device for sewing machines,申请号US19290358187-传众专利搜索

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发明名称	Presser-device for sewing machines
摘要
申请公布号	US1803930(A)	申请公布日期	1931.05.05
申请号	US19290358187	申请日期	1929.04.26
申请人	THE SINGER MANUFACTURING COMPANY	发明人	BECKER RUDOLPH
分类号	D05B21/00;D05B29/06;D05B35/06	主分类号	D05B21/00
代理机构		代理人
主权项
地址

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