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发明名称
日食演示仪
摘要
1.省略其它视图。2.请求保护色彩。演示板主视图__转盘主视图
申请公布号
CN3025247D
申请公布日期
1994.05.18
申请号
CN93301119.9
申请日期
1993.03.27
申请人
王荣芬
发明人
王荣芬
分类号
19-07
主分类号
19-07
代理机构
黑龙江省绥化地区专利事务所
代理人
陈雅平
主权项
地址
152100黑龙江省望奎县希望小学
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