Automatic focus adjusting means for cameras,申请号US19470752888-传众专利搜索

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发明名称	Automatic focus adjusting means for cameras
摘要
申请公布号	US2522631(A)	申请公布日期	1950.09.19
申请号	US19470752888	申请日期	1947.06.06
申请人	MERCER RAYMOND C	发明人	MERCER RAYMOND C.
分类号	G03B3/00	主分类号	G03B3/00
代理机构		代理人
主权项
地址

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