CN204215615U - 一种可折叠概率分布演示教具 - Google Patents
一种可折叠概率分布演示教具 Download PDFInfo
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- CN204215615U CN204215615U CN201420553967.8U CN201420553967U CN204215615U CN 204215615 U CN204215615 U CN 204215615U CN 201420553967 U CN201420553967 U CN 201420553967U CN 204215615 U CN204215615 U CN 204215615U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 description 1
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CN201420553967.8U CN204215615U (zh) | 2014-09-24 | 2014-09-24 | 一种可折叠概率分布演示教具 |
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CN201420553967.8U CN204215615U (zh) | 2014-09-24 | 2014-09-24 | 一种可折叠概率分布演示教具 |
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CN204215615U true CN204215615U (zh) | 2015-03-18 |
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CN201420553967.8U Expired - Fee Related CN204215615U (zh) | 2014-09-24 | 2014-09-24 | 一种可折叠概率分布演示教具 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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: Zhao Chongqian Inventor before: Liu Zhihai |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20170503 Address after: 529060, Jiangmen, Guangdong Province, Jianghai Road, Wu industrial Street, Wu East Industrial Development Zone, No. 192 Xiang Yue Road (06 factory building) Patentee after: Jiangmen Jianghai teaching equipment Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Futian District Fuzhong Road No. 1016 Metro Building 27 layer to the 31 layer Patentee before: Liu Zhihai |
|
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: 20150318 Termination date: 20170924 |