Improvements in or relating to transparency changing devices for optical projectors,申请号GB19620037499-传众专利搜索

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发明名称	Improvements in or relating to transparency changing devices for optical projectors
摘要
申请公布号	GB952574(A)	申请公布日期	1964.03.18
申请号	GB19620037499	申请日期	1962.10.04
申请人	ERNST LEITZ G.M.B.H.	发明人
分类号	G03B23/04	主分类号	G03B23/04
代理机构		代理人
主权项
地址

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