Improvements in typewriters,申请号GB19510028428-传众专利搜索

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发明名称	Improvements in typewriters
摘要
申请公布号	GB712705(A)	申请公布日期	1954.07.28
申请号	GB19510028428	申请日期	1951.12.04
申请人	UNDERWOOD CORPORATION	发明人
分类号	B41J7/02	主分类号	B41J7/02
代理机构		代理人
主权项
地址

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