Method of preparing and using hectographic masters,申请号US19600074771-传众专利搜索

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发明名称	Method of preparing and using hectographic masters
摘要
申请公布号	US3241965(A)	申请公布日期	1966.03.22
申请号	US19600074771	申请日期	1960.12.09
申请人	WILHELM RITZERFELD;GERHARD RITZERFELD	发明人	RITZERFELD WILHELM;RITZERFELD GERHARD
分类号	G03F7/06	主分类号	G03F7/06
代理机构		代理人
主权项
地址

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