Improvements relating to optical polarizing devices,申请号GB19380033449-传众专利搜索

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发明名称	Improvements relating to optical polarizing devices
摘要
申请公布号	GB521378(A)	申请公布日期	1940.05.20
申请号	GB19380033449	申请日期	1938.11.17
申请人	EDWIN HERBERT LAND	发明人
分类号	F21S8/10	主分类号	F21S8/10
代理机构		代理人
主权项
地址

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