CN209833113U - 一种推拉式智慧黑板 - Google Patents
一种推拉式智慧黑板 Download PDFInfo
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- CN209833113U CN209833113U CN201920551457.XU CN201920551457U CN209833113U CN 209833113 U CN209833113 U CN 209833113U CN 201920551457 U CN201920551457 U CN 201920551457U CN 209833113 U CN209833113 U CN 209833113U
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- 230000000694 effects Effects 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 17
- 239000011521 glass Substances 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000005338 frosted glass Substances 0.000 description 1
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CN201920551457.XU CN209833113U (zh) | 2019-04-23 | 2019-04-23 | 一种推拉式智慧黑板 |
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CN201920551457.XU CN209833113U (zh) | 2019-04-23 | 2019-04-23 | 一种推拉式智慧黑板 |
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CN209833113U true CN209833113U (zh) | 2019-12-24 |
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
IP01 | Partial invalidation of patent right |
Commission number: 5W130562 Conclusion of examination: Declare partial invalidity of utility model patent number 201920551457. X, and continue to maintain the validity of the patent on the basis of the claims submitted by the patentee on February 28, 2023 Decision date of declaring invalidation: 20230612 Decision number of declaring invalidation: 561972 Denomination of utility model: A push-pull smart blackboard Granted publication date: 20191224 Patentee: SHANGHAI EDUTECH Co.,Ltd. |
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IP01 | Partial invalidation of patent right |