Improvements in plotting instruments for the use of surveyors, draughtsmen and others,申请号GB19380000572-传众专利搜索

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发明名称	Improvements in plotting instruments for the use of surveyors, draughtsmen and others
摘要
申请公布号	GB493588(A)	申请公布日期	1938.10.11
申请号	GB19380000572	申请日期	1938.01.07
申请人	GANEGODAGE MARTIN PERERA AMARASEKERA	发明人
分类号	G01C17/12	主分类号	G01C17/12
代理机构		代理人
主权项
地址

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