Perfectionnements aux machines à écrire,申请号FRD812557-传众专利搜索

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发明名称	Perfectionnements aux machines à écrire
摘要
申请公布号	FR812557(A)	申请公布日期	1937.05.12
申请号	FRD812557	申请日期	1936.10.26
申请人	ROYAL TYPEWRITER COMPANY INC.	发明人
分类号	B41J21/04	主分类号	B41J21/04
代理机构		代理人
主权项
地址

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