Adjustable curve for draughtsmen,申请号GB19430011496-传众专利搜索

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发明名称	Adjustable curve for draughtsmen
摘要
申请公布号	GB577204(A)	申请公布日期	1946.05.09
申请号	GB19430011496	申请日期	1945.09.10
申请人	ERIC WHITTAKER	发明人
分类号	B43L13/22	主分类号	B43L13/22
代理机构		代理人
主权项
地址

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