OPTISCHES SYSTEM MIT VERAENDERBARER BRENNWEITE,申请号AT19770008990-传众专利搜索

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发明名称	OPTISCHES SYSTEM MIT VERAENDERBARER BRENNWEITE
摘要
申请公布号	ATA899077(A)	申请公布日期	1981.10.15
申请号	AT19770008990	申请日期	1977.12.15
申请人	BELL & HOWELL COMPANY	发明人
分类号	G02B15/173;(IPC1-7):G02B15/16	主分类号	G02B15/173
代理机构		代理人
主权项
地址

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