An improved method of producing printed matter so that the character of the matter is alterable by rubbing,申请号GB19370009815-传众专利搜索

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发明名称	An improved method of producing printed matter so that the character of the matter is alterable by rubbing
摘要
申请公布号	GB493514(A)	申请公布日期	1938.10.06
申请号	GB19370009815	申请日期	1937.04.06
申请人	ELIAS ALEXANDER	发明人
分类号	B41M3/00	主分类号	B41M3/00
代理机构		代理人
主权项
地址

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