METHOD OF MAKING PRINTING MASKS WITH HIGH ENERGY BEAMS,申请号USD3668028-传众专利搜索

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发明名称	METHOD OF MAKING PRINTING MASKS WITH HIGH ENERGY BEAMS
摘要
申请公布号	US3668028(A)	申请公布日期	1972.06.06
申请号	USD3668028	申请日期	1970.06.10
申请人	E.I. DU PONT DE NEMOURS AND CO.	发明人	OLIVER A. SHORT
分类号	H05K3/12;(IPC1-7):B41C1/14	主分类号	H05K3/12
代理机构		代理人
主权项
地址

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