CN203995318U - 一种教学圆规 - Google Patents
一种教学圆规 Download PDFInfo
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- CN203995318U CN203995318U CN201420246128.1U CN201420246128U CN203995318U CN 203995318 U CN203995318 U CN 203995318U CN 201420246128 U CN201420246128 U CN 201420246128U CN 203995318 U CN203995318 U CN 203995318U
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CN201420246128.1U CN203995318U (zh) | 2014-05-14 | 2014-05-14 | 一种教学圆规 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106864121A (zh) * | 2017-03-15 | 2017-06-20 | 李路平 | 一种数学教学教具 |
CN107901677A (zh) * | 2017-12-20 | 2018-04-13 | 亚泰克文化用品(昆山)有限公司 | 一种圆规手柄及圆规 |
CN112046176A (zh) * | 2020-09-21 | 2020-12-08 | 山东工业职业学院 | 一种自持画笔的圆规 |
CN112046177A (zh) * | 2020-09-21 | 2020-12-08 | 山东工业职业学院 | 一种自持画笔的圆规的削笔方法 |
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2014
- 2014-05-14 CN CN201420246128.1U patent/CN203995318U/zh not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106864121A (zh) * | 2017-03-15 | 2017-06-20 | 李路平 | 一种数学教学教具 |
CN107901677A (zh) * | 2017-12-20 | 2018-04-13 | 亚泰克文化用品(昆山)有限公司 | 一种圆规手柄及圆规 |
CN112046176A (zh) * | 2020-09-21 | 2020-12-08 | 山东工业职业学院 | 一种自持画笔的圆规 |
CN112046177A (zh) * | 2020-09-21 | 2020-12-08 | 山东工业职业学院 | 一种自持画笔的圆规的削笔方法 |
CN112046176B (zh) * | 2020-09-21 | 2022-07-01 | 山东工业职业学院 | 一种自持画笔的圆规 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
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Owner name: JINING VOCATIONAL TECHNICAL COLLEGE Free format text: FORMER OWNER: SI JINLI Effective date: 20150806 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20150806 Address after: 272000 Shandong province Jining Jinyu Road No. 3 Patentee after: Jining Vocational Technical College Address before: Jinyu road 272000 in Shandong Province, Jining City No. 3 Jining Polytechnic Patentee before: Si Jinli |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20150514 |
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EXPY | Termination of patent right or utility model |