Improvements in optical means for indicating or recording a path of movement,申请号GB19570035354-传众专利搜索

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发明名称	Improvements in optical means for indicating or recording a path of movement
摘要
申请公布号	GB885508(A)	申请公布日期	1961.12.28
申请号	GB19570035354	申请日期	1957.11.13
申请人	NATIONAL RESEARCH DEVELOPMENT CORPORATION	发明人	NORMAN DONALD FREDERICK;BARBER CLIFFORD CHARLES
分类号	G02B21/00	主分类号	G02B21/00
代理机构		代理人
主权项
地址

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