Improvements in light projecting systems,申请号GB19370015697-传众专利搜索

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发明名称	Improvements in light projecting systems
摘要
申请公布号	GB496885(A)	申请公布日期	1938.12.07
申请号	GB19370015697	申请日期	1937.06.07
申请人	RESEARCH CORPORATION	发明人
分类号	F21S8/12	主分类号	F21S8/12
代理机构		代理人
主权项
地址

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