Improvements in indicators,申请号GB19570004205-传众专利搜索

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发明名称	Improvements in indicators
摘要
申请公布号	GB822076(A)	申请公布日期	1959.10.21
申请号	GB19570004205	申请日期	1957.02.07
申请人	NORMAN JOHN LOGAN	发明人
分类号	G06G1/00	主分类号	G06G1/00
代理机构		代理人
主权项
地址

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