Improvements relating to sewing machines,申请号GB19380035401-传众专利搜索

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发明名称	Improvements relating to sewing machines
摘要
申请公布号	GB505422(A)	申请公布日期	1939.05.10
申请号	GB19380035401	申请日期	1938.12.05
申请人	OLIVER GEORGE HUTCHINSON;EDWARD WEST ARMSTRONG	发明人
分类号	D05B49/00;D05B73/00	主分类号	D05B49/00
代理机构		代理人
主权项
地址

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