NAPHTHYL HYDRAZINE SULFONIC ACIDS IN DIRECT POSITIVE PHOTOGRAPHIC PROCESSES,申请号CAD497730-传众专利搜索

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发明名称	NAPHTHYL HYDRAZINE SULFONIC ACIDS IN DIRECT POSITIVE PHOTOGRAPHIC PROCESSES
摘要
申请公布号	CA497730(A)	申请公布日期	1953.11.17
申请号	CAD497730	申请日期
申请人	CANADIAN KODAK CO.	发明人	FREDERIC R. BEAN;HAROLD D. RUSSELL
分类号		主分类号
代理机构		代理人
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