Slide projection apparatus,申请号US19590845867-传众专利搜索

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发明名称	Slide projection apparatus
摘要
申请公布号	US2999425(A)	申请公布日期	1961.09.12
申请号	US19590845867	申请日期	1959.10.12
申请人	BAUSCH & LOMB INCORPORATED	发明人	EMMEL HENRY J.
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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