Apparatus for drawing an ellipse,申请号GB19450009216-传众专利搜索

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发明名称	Apparatus for drawing an ellipse
摘要
申请公布号	GB590749(A)	申请公布日期	1947.07.28
申请号	GB19450009216	申请日期	1946.05.11
申请人	WILLIAM HUGH JONES	发明人
分类号	B43L11/055	主分类号	B43L11/055
代理机构		代理人
主权项
地址

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