Print control device for photographic enlargers,申请号US19470781416-传众专利搜索

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发明名称	Print control device for photographic enlargers
摘要
申请公布号	US2462340(A)	申请公布日期	1949.02.22
申请号	US19470781416	申请日期	1947.10.22
申请人	SIMON BROTHERS, INC.	发明人	SIMMON ALFRED;WEISGLASS LOUIS L.
分类号	G03B27/73	主分类号	G03B27/73
代理机构		代理人
主权项
地址

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