Projection of slides,申请号US19590786199-传众专利搜索

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发明名称	Projection of slides
摘要
申请公布号	US3044198(A)	申请公布日期	1962.07.17
申请号	US19590786199	申请日期	1959.01.12
申请人	BELL & HOWELL COMPANY	发明人	BADALICH FRANK C.
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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