Improvements in or relating to mechanical drawing,申请号GB19530031523-传众专利搜索

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发明名称	Improvements in or relating to mechanical drawing
摘要
申请公布号	GB763075(A)	申请公布日期	1956.12.05
申请号	GB19530031523	申请日期	1953.11.13
申请人	RUDOLF HOLMDAHL	发明人
分类号	B43L13/14	主分类号	B43L13/14
代理机构		代理人
主权项
地址

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