Наглядное учебное пособие по геометрии,申请号SU19400300710-传众专利搜索

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发明名称	Наглядное учебное пособие по геометрии
摘要
申请公布号	SU74720(A1)	申请公布日期	1948.11.30
申请号	SU19400300710	申请日期	1940.10.24
申请人	BEREZANSKAYA E.S.	发明人	BEREZANSKAYA E.S.
分类号	G09B23/04	主分类号	G09B23/04
代理机构		代理人
主权项
地址

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