加减运算棋,申请号CN93308740.3-传众专利搜索

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发明名称	加减运算棋
摘要	省略其它视图。棋子后视图1__棋子俯视图1__棋子主视图(1—21)__棋盘主视图
申请公布号	CN3028459D	申请公布日期	1994.11.23
申请号	CN93308740.3	申请日期	1993.12.02
申请人	许宏春	发明人	许宏春
分类号	21-01	主分类号	21-01
代理机构	湖北省荆州地区专利事务所	代理人	陈德斌
主权项
地址	431822湖北省京山县石龙乡中学

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