Blackboard
The utility model relates to a blackboard, belonging to the technical field of the cultural articles of the articles for daily use, with the technical proposal being that the faces of an equilateral triangular prism form the face of the blackboard, and the axles of the triangular prism are provided...
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| Main Author | |
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| Format | Patent |
| Language | English |
| Published |
30.10.2002
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| Edition | 7 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | The utility model relates to a blackboard, belonging to the technical field of the cultural articles of the articles for daily use, with the technical proposal being that the faces of an equilateral triangular prism form the face of the blackboard, and the axles of the triangular prism are provided with rotary shafts which are arranged on a frame in a row. Hereby, the basic proposal of the utility model is fulfilled. The utility model has the advantage that the revolving of the triangular prism can change partial or whole face of the blackboard for three times, which reduces twice erasing of the blackboard and overcomes the defects of the prior blackboard which needs frequent erasing. |
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| AbstractList | The utility model relates to a blackboard, belonging to the technical field of the cultural articles of the articles for daily use, with the technical proposal being that the faces of an equilateral triangular prism form the face of the blackboard, and the axles of the triangular prism are provided with rotary shafts which are arranged on a frame in a row. Hereby, the basic proposal of the utility model is fulfilled. The utility model has the advantage that the revolving of the triangular prism can change partial or whole face of the blackboard for three times, which reduces twice erasing of the blackboard and overcomes the defects of the prior blackboard which needs frequent erasing. |
| Author | YAOWU GUO |
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| Notes | Application Number: CN2002209936U |
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| RelatedCompanies | GUO YAOWU |
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| Snippet | The utility model relates to a blackboard, belonging to the technical field of the cultural articles of the articles for daily use, with the technical proposal... |
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| SubjectTerms | ACCESSORIES FOR WRITING OR DRAWING ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES PERFORMING OPERATIONS TRANSPORTING WRITING OR DRAWING IMPLEMENTS |
| Title | Blackboard |
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