CN201841843U - 一种充电式田字型黑板擦 - Google Patents
一种充电式田字型黑板擦 Download PDFInfo
- Publication number
- CN201841843U CN201841843U CN2010205900526U CN201020590052U CN201841843U CN 201841843 U CN201841843 U CN 201841843U CN 2010205900526 U CN2010205900526 U CN 2010205900526U CN 201020590052 U CN201020590052 U CN 201020590052U CN 201841843 U CN201841843 U CN 201841843U
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- blackboard eraser
- rechargeable
- matrix pattern
- dust
- loam cake
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- 239000000428 dust Substances 0.000 claims abstract description 23
- 239000011159 matrix material Substances 0.000 claims description 20
- 244000227633 Ocotea pretiosa Species 0.000 claims description 2
- 235000004263 Ocotea pretiosa Nutrition 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 description 3
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
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Abstract
Description
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2010205900526U CN201841843U (zh) | 2010-11-04 | 2010-11-04 | 一种充电式田字型黑板擦 |
Applications Claiming Priority (1)
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CN2010205900526U CN201841843U (zh) | 2010-11-04 | 2010-11-04 | 一种充电式田字型黑板擦 |
Publications (1)
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CN201841843U true CN201841843U (zh) | 2011-05-25 |
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CN2010205900526U Expired - Fee Related CN201841843U (zh) | 2010-11-04 | 2010-11-04 | 一种充电式田字型黑板擦 |
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CN (1) | CN201841843U (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101966788A (zh) * | 2010-11-04 | 2011-02-09 | 尚玉东 | 一种充电式田字型黑板擦 |
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2010
- 2010-11-04 CN CN2010205900526U patent/CN201841843U/zh not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101966788A (zh) * | 2010-11-04 | 2011-02-09 | 尚玉东 | 一种充电式田字型黑板擦 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: YANCHENG ZHONGKE CHEMICAL MACHINERY CO., LTD. Free format text: FORMER OWNER: SHANG YUDONG Effective date: 20130626 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20130626 Address after: 224500, Yancheng City Binhai County, Jiangsu economic and Technological Development Zone Patentee after: Yancheng Zhongke Chemical Machinery Co., Ltd. Address before: 224500 Jiangsu province Yancheng City Binhai County Fudong Road No. 248 Building No. 10 room 101 Patentee before: Shang Yudong |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20151104 |
|
EXPY | Termination of patent right or utility model |