Device for adjusting objectives of different focal lengths in cameras,申请号US19400371976-传众专利搜索

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发明名称	Device for adjusting objectives of different focal lengths in cameras
摘要
申请公布号	US2401134(A)	申请公布日期	1946.05.28
申请号	US19400371976	申请日期	1940.12.27
申请人	HERMANN BRETTHAUER	发明人	BRETTHAUER HERMANN
分类号	G02B7/04	主分类号	G02B7/04
代理机构		代理人
主权项
地址

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