Novel blackboard eraser
The utility model discloses a novel blackboard eraser, comprising a blackboard eraser head fixing frame. A blackboard eraser head can be inlaid in the blackboard eraser head fixing frame, and the blackboard eraser head fixing frame is also connected with a connecting rod. When the novel blackboard e...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Online-Zugang: | Volltext bestellen |
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| Zusammenfassung: | The utility model discloses a novel blackboard eraser, comprising a blackboard eraser head fixing frame. A blackboard eraser head can be inlaid in the blackboard eraser head fixing frame, and the blackboard eraser head fixing frame is also connected with a connecting rod. When the novel blackboard eraser is used, the range contacted by the blackboard eraser can be expanded by adjusting the length of the connecting rod. |
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