CN107264134B - 一种教学用机械四方规 - Google Patents
一种教学用机械四方规 Download PDFInfo
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- CN107264134B CN107264134B CN201710399911.XA CN201710399911A CN107264134B CN 107264134 B CN107264134 B CN 107264134B CN 201710399911 A CN201710399911 A CN 201710399911A CN 107264134 B CN107264134 B CN 107264134B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/001—Mathematical drawing instruments
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- Toys (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
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Priority Applications (1)
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CN201710399911.XA CN107264134B (zh) | 2017-05-31 | 2017-05-31 | 一种教学用机械四方规 |
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CN201710399911.XA CN107264134B (zh) | 2017-05-31 | 2017-05-31 | 一种教学用机械四方规 |
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CN107264134A CN107264134A (zh) | 2017-10-20 |
CN107264134B true CN107264134B (zh) | 2019-03-29 |
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CN201710399911.XA Active CN107264134B (zh) | 2017-05-31 | 2017-05-31 | 一种教学用机械四方规 |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB620163A (en) * | 1946-07-05 | 1949-03-21 | Oskar Ruedi | Drafting machine with drawing board |
GB671486A (en) * | 1948-10-28 | 1952-05-07 | Kurt Prufer | Improvements in or relating to drawing boards |
US4070758A (en) * | 1975-12-20 | 1978-01-31 | Mutoh Industry Ltd. | Straightedge supporting device for rail type drawing instrument |
CN202275539U (zh) * | 2011-11-01 | 2012-06-13 | 张海伦 | 数学教学演示器 |
CN203882529U (zh) * | 2014-04-16 | 2014-10-15 | 吉林大学 | 四连杆机构教学演示道具 |
CN104669883A (zh) * | 2014-12-09 | 2015-06-03 | 广东工业大学 | 一种变形尺 |
CN204480589U (zh) * | 2015-03-24 | 2015-07-15 | 成都大学 | 一种平面四杆机构示教仪 |
CN205416880U (zh) * | 2015-10-26 | 2016-08-03 | 燕山大学里仁学院 | 新型简便易固定的教学用黑板圆规 |
CN205541567U (zh) * | 2016-03-01 | 2016-08-31 | 青岛理工大学 | 一种高等数学旋转曲面教具 |
CN206086109U (zh) * | 2016-08-12 | 2017-04-12 | 李继康 | 机械设计课堂演示教具 |
-
2017
- 2017-05-31 CN CN201710399911.XA patent/CN107264134B/zh active Active
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB620163A (en) * | 1946-07-05 | 1949-03-21 | Oskar Ruedi | Drafting machine with drawing board |
GB671486A (en) * | 1948-10-28 | 1952-05-07 | Kurt Prufer | Improvements in or relating to drawing boards |
US4070758A (en) * | 1975-12-20 | 1978-01-31 | Mutoh Industry Ltd. | Straightedge supporting device for rail type drawing instrument |
CN202275539U (zh) * | 2011-11-01 | 2012-06-13 | 张海伦 | 数学教学演示器 |
CN203882529U (zh) * | 2014-04-16 | 2014-10-15 | 吉林大学 | 四连杆机构教学演示道具 |
CN104669883A (zh) * | 2014-12-09 | 2015-06-03 | 广东工业大学 | 一种变形尺 |
CN204480589U (zh) * | 2015-03-24 | 2015-07-15 | 成都大学 | 一种平面四杆机构示教仪 |
CN205416880U (zh) * | 2015-10-26 | 2016-08-03 | 燕山大学里仁学院 | 新型简便易固定的教学用黑板圆规 |
CN205541567U (zh) * | 2016-03-01 | 2016-08-31 | 青岛理工大学 | 一种高等数学旋转曲面教具 |
CN206086109U (zh) * | 2016-08-12 | 2017-04-12 | 李继康 | 机械设计课堂演示教具 |
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Publication number | Publication date |
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CN107264134A (zh) | 2017-10-20 |
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Effective date of registration: 20201215 Address after: 233399, 4 floor, building 3, industrial Acceleration Center, Wuhe County Economic Development Zone, Bengbu, Anhui. Patentee after: WUHE ZHIKAI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Patentee after: Zeng Yuee Address before: 528400 room 8, 4 floor, main building, 1 Lai Lai street, Zhongshan, Guangdong. Patentee before: ZHONGSHAN XIANGSHI MACHINERY EQUIPMENT Co.,Ltd. |
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Effective date of registration: 20210913 Address after: 273300 No.207, East Second floor, Administration Committee of Shandong Pingyi Economic Development Zone, west section of Jinhua Road, Pingyi Economic Development Zone, Linyi City, Shandong Province Patentee after: Pingyi Economic Development Zone Investment Development Co.,Ltd. Address before: 233399, 4 floor, building 3, industrial Acceleration Center, Wuhe County Economic Development Zone, Bengbu, Anhui. Patentee before: WUHE ZHIKAI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Patentee before: Zeng Yuee |
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