Camera diaphragm operating attachment,申请号US19470774958-传众专利搜索

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发明名称	Camera diaphragm operating attachment
摘要
申请公布号	US2496408(A)	申请公布日期	1950.02.07
申请号	US19470774958	申请日期	1947.09.19
申请人	NICHOLAS POLANCO	发明人	POLANCO NICHOLAS
分类号	G03B19/26	主分类号	G03B19/26
代理机构		代理人
主权项
地址

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