PROCESS OF AND APPARATUS FOR MAKING HALF-TONE NEGATIVES,申请号CAD485839-传众专利搜索

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发明名称	PROCESS OF AND APPARATUS FOR MAKING HALF-TONE NEGATIVES
摘要
申请公布号	CA485839(A)	申请公布日期	1952.08.19
申请号	CAD485839	申请日期
申请人	FRANCIS ERNEST WATTIER	发明人	FRANCIS ERNEST WATTIER
分类号		主分类号
代理机构		代理人
主权项
地址

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