CN202904920U - 一种远程的教学系统 - Google Patents
一种远程的教学系统 Download PDFInfo
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- CN202904920U CN202904920U CN 201220324361 CN201220324361U CN202904920U CN 202904920 U CN202904920 U CN 202904920U CN 201220324361 CN201220324361 CN 201220324361 CN 201220324361 U CN201220324361 U CN 201220324361U CN 202904920 U CN202904920 U CN 202904920U
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CN 201220324361 CN202904920U (zh) | 2012-07-06 | 2012-07-06 | 一种远程的教学系统 |
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CN 201220324361 CN202904920U (zh) | 2012-07-06 | 2012-07-06 | 一种远程的教学系统 |
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CN202904920U true CN202904920U (zh) | 2013-04-24 |
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CN 201220324361 Expired - Fee Related CN202904920U (zh) | 2012-07-06 | 2012-07-06 | 一种远程的教学系统 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107705637A (zh) * | 2017-10-14 | 2018-02-16 | 黄燕云 | 多媒体互动教学投影系统 |
CN112672249A (zh) * | 2021-01-14 | 2021-04-16 | 白建花 | 一种听力设备及其使用方法 |
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- 2012-07-06 CN CN 201220324361 patent/CN202904920U/zh not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107705637A (zh) * | 2017-10-14 | 2018-02-16 | 黄燕云 | 多媒体互动教学投影系统 |
CN112672249A (zh) * | 2021-01-14 | 2021-04-16 | 白建花 | 一种听力设备及其使用方法 |
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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 |
Owner name: YUNGUANDUAN INTERNET SOFTWARE CO., LTD. Free format text: FORMER NAME: XIN'AN SOFTWARE (CHINA) CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 518000 Guangdong city of Shenzhen province Futian District science and technology building on the 18 floor Zhuzilin Education (A) Patentee after: YUNGUANDUAN INTERNET SOFTWARE CO., LTD. Address before: 518000 Guangdong city of Shenzhen province Futian District science and technology building on the 18 floor Zhuzilin Education (A) Patentee before: Information Security Software (China) Co., Ltd. |
|
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: 20130424 Termination date: 20190706 |