Interchangeable optical system for cameras,申请号US19470753414-传众专利搜索

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发明名称	Interchangeable optical system for cameras
摘要
申请公布号	US2502788(A)	申请公布日期	1950.04.04
申请号	US19470753414	申请日期	1947.06.09
申请人	THOROBRED PHOTO SERVICE, INC.	发明人	HUNTER FRANK B.
分类号	G03B19/18	主分类号	G03B19/18
代理机构		代理人
主权项
地址

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