CN201117135Y - 一种数学学习用具 - Google Patents
一种数学学习用具 Download PDFInfo
- Publication number
- CN201117135Y CN201117135Y CNU2007201548131U CN200720154813U CN201117135Y CN 201117135 Y CN201117135 Y CN 201117135Y CN U2007201548131 U CNU2007201548131 U CN U2007201548131U CN 200720154813 U CN200720154813 U CN 200720154813U CN 201117135 Y CN201117135 Y CN 201117135Y
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNU2007201548131U CN201117135Y (zh) | 2007-07-13 | 2007-07-13 | 一种数学学习用具 |
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CNU2007201548131U CN201117135Y (zh) | 2007-07-13 | 2007-07-13 | 一种数学学习用具 |
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CN201117135Y true CN201117135Y (zh) | 2008-09-17 |
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CNU2007201548131U Expired - Fee Related CN201117135Y (zh) | 2007-07-13 | 2007-07-13 | 一种数学学习用具 |
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CN (1) | CN201117135Y (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105654814A (zh) * | 2016-03-28 | 2016-06-08 | 仲杏英 | 数学中的抽象环的形象化演示装置 |
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2007
- 2007-07-13 CN CNU2007201548131U patent/CN201117135Y/zh not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105654814A (zh) * | 2016-03-28 | 2016-06-08 | 仲杏英 | 数学中的抽象环的形象化演示装置 |
CN105654814B (zh) * | 2016-03-28 | 2018-06-19 | 西安工程大学 | 数学中的抽象环的形象化演示装置 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: BEIJING ENERGEY BABY EDUCATION + TECHNOLOGY CO., L Free format text: FORMER NAME: BEIJING NENGLIANG SHIKONG CULTURE DEVELOPMENT CO., LTD. |
|
CP03 | Change of name, title or address |
Address after: 100083, room 115, building C, Dongsheng building, No. 8 East Zhongguancun Road, Beijing, Haidian District Patentee after: Beijing Energy Education Technology Co., Ltd. Address before: 100088, room 27, 717 Zhongguancun street, Beijing, Haidian District Patentee before: Beijing Nengliang Shikong Culture Development Co., Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20140713 |
|
EXPY | Termination of patent right or utility model |