Optical observation instrument,申请号US19400342821-传众专利搜索

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发明名称	Optical observation instrument
摘要
申请公布号	US2284049(A)	申请公布日期	1942.05.26
申请号	US19400342821	申请日期	1940.06.27
申请人	BARR AND STROUD, LIMITED	发明人	FRENCH JAMES WEIR
分类号	G01C3/22	主分类号	G01C3/22
代理机构		代理人
主权项
地址

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