CN202608341U - 循环式双层自擦黑板 - Google Patents
循环式双层自擦黑板 Download PDFInfo
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- CN202608341U CN202608341U CN 201220085396 CN201220085396U CN202608341U CN 202608341 U CN202608341 U CN 202608341U CN 201220085396 CN201220085396 CN 201220085396 CN 201220085396 U CN201220085396 U CN 201220085396U CN 202608341 U CN202608341 U CN 202608341U
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Application Number | Priority Date | Filing Date | Title |
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CN 201220085396 CN202608341U (zh) | 2012-03-08 | 2012-03-08 | 循环式双层自擦黑板 |
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CN 201220085396 CN202608341U (zh) | 2012-03-08 | 2012-03-08 | 循环式双层自擦黑板 |
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CN202608341U true CN202608341U (zh) | 2012-12-19 |
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CN 201220085396 Expired - Fee Related CN202608341U (zh) | 2012-03-08 | 2012-03-08 | 循环式双层自擦黑板 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102529519A (zh) * | 2012-03-08 | 2012-07-04 | 罗奕永 | 循环式双层自擦黑板 |
CN103754025A (zh) * | 2013-12-29 | 2014-04-30 | 刘艳丰 | 一种循环交替式免擦无尘黑板 |
CN105882260A (zh) * | 2015-01-26 | 2016-08-24 | 蓝振宁 | 一种自动无尘黑板刷 |
CN107139610A (zh) * | 2017-07-06 | 2017-09-08 | 安徽理工大学 | 一种上下推拉式高效自洁黑板 |
CN112289085A (zh) * | 2020-11-10 | 2021-01-29 | 于家杰 | 一种改良型教育演示设备 |
CN115489224A (zh) * | 2022-09-30 | 2022-12-20 | 富阳学院 | 一种教学教具 |
-
2012
- 2012-03-08 CN CN 201220085396 patent/CN202608341U/zh not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102529519A (zh) * | 2012-03-08 | 2012-07-04 | 罗奕永 | 循环式双层自擦黑板 |
CN103754025A (zh) * | 2013-12-29 | 2014-04-30 | 刘艳丰 | 一种循环交替式免擦无尘黑板 |
CN105882260A (zh) * | 2015-01-26 | 2016-08-24 | 蓝振宁 | 一种自动无尘黑板刷 |
CN107139610A (zh) * | 2017-07-06 | 2017-09-08 | 安徽理工大学 | 一种上下推拉式高效自洁黑板 |
CN112289085A (zh) * | 2020-11-10 | 2021-01-29 | 于家杰 | 一种改良型教育演示设备 |
CN115489224A (zh) * | 2022-09-30 | 2022-12-20 | 富阳学院 | 一种教学教具 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee | ||
CP02 | Change in the address of a patent holder |
Address after: 510830 Guangdong Province, Guangzhou Huadu District Chini town 2290 road 20-6 Patentee after: Luo Yiyong Address before: 510641 Guangdong city of Guangzhou province Tianhe District Wushan South China University of Technology north north nine 206 Patentee before: Luo Yiyong |
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DD01 | Delivery of document by public notice |
Addressee: Luo Yiyong Document name: Notification of Passing Examination on Formalities |
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DD01 | Delivery of document by public notice |
Addressee: Luo Yiyong Document name: Notification to Pay the Fees |
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DD01 | Delivery of document by public notice |
Addressee: Luo Yiyong Document name: Notification of Termination of Patent Right |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150308 |
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EXPY | Termination of patent right or utility model |