CN204414928U - 一种多功能数学教学用具 - Google Patents
一种多功能数学教学用具 Download PDFInfo
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- CN204414928U CN204414928U CN201520024374.7U CN201520024374U CN204414928U CN 204414928 U CN204414928 U CN 204414928U CN 201520024374 U CN201520024374 U CN 201520024374U CN 204414928 U CN204414928 U CN 204414928U
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CN201520024374.7U CN204414928U (zh) | 2015-01-14 | 2015-01-14 | 一种多功能数学教学用具 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104608529A (zh) * | 2015-01-14 | 2015-05-13 | 鲁杨 | 一种多功能数学教学用具 |
CN105538969A (zh) * | 2016-02-03 | 2016-05-04 | 上海市第一中学 | 一种带圆规和量角器的刻度尺 |
CN107953702A (zh) * | 2017-11-19 | 2018-04-24 | 梁朝光 | 四合一学习文具 |
CN113417630A (zh) * | 2021-08-02 | 2021-09-21 | 贵州大学 | 一种炮孔角度快速测验装置 |
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2015
- 2015-01-14 CN CN201520024374.7U patent/CN204414928U/zh not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104608529A (zh) * | 2015-01-14 | 2015-05-13 | 鲁杨 | 一种多功能数学教学用具 |
CN105538969A (zh) * | 2016-02-03 | 2016-05-04 | 上海市第一中学 | 一种带圆规和量角器的刻度尺 |
CN107953702A (zh) * | 2017-11-19 | 2018-04-24 | 梁朝光 | 四合一学习文具 |
CN113417630A (zh) * | 2021-08-02 | 2021-09-21 | 贵州大学 | 一种炮孔角度快速测验装置 |
CN113417630B (zh) * | 2021-08-02 | 2022-09-16 | 贵州大学 | 一种炮孔角度快速测验装置 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CB03 | Change of inventor or designer information | ||
CB03 | Change of inventor or designer information |
Inventor after: Dou Junfeng Inventor before: Lu Yang |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20170629 Address after: 734100 Gansu city of Zhangye province Shandan County second middle school Patentee after: Dou Junfeng Address before: 233300 Anhui city of Bengbu province Wuhe County Chengguan Town Road defense Agricultural Bureau Dormitory Building 2 unit 204 room Patentee before: Lu Yang |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20180114 |