Improvements in keys for typewriting machines,申请号GB19390026180-传众专利搜索

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发明名称	Improvements in keys for typewriting machines
摘要
申请公布号	GB534976(A)	申请公布日期	1941.03.25
申请号	GB19390026180	申请日期	1939.09.19
申请人	ROYAL TYPEWRITER COMPANY, INC.	发明人
分类号	B41J5/12	主分类号	B41J5/12
代理机构		代理人
主权项
地址

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