Plane day and night length change demonstration instrument
CN309474535SActive Publication Date: 2025-09-02ZHEJIANG YANGGUANG EDUCATION TECH CO LTD
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Patent Information
- Application Number
- CN202430679186.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2039-10-28
Smart Images
Figure 000007_ABST
Abstract
1. The name of this design product: Flat surface day and night length change demonstrator. 2. Purpose of this design product: A flat-surface demonstrator for the change in 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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