Teaching Demonstration Instrument (Day and Night Changes)
CN309429889SActive Publication Date: 2025-08-08ZHEJIANG YANGGUANG EDUCATION TECH CO LTD
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Patent Information
- Application Number
- CN202430686423.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2039-10-30
Smart Images
Figure 000007_ABST
Abstract
1. The name of this design product: Teaching Demonstration Device (Day and Night Changes). 2. Purpose of this design product: A three-dimensional demonstrator of the changes in the length of day and night used in teaching experiments. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.
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