Mathematical decomposition ruler (addition and subtraction within 20)
CN309065095SActive Publication Date: 2025-01-10陈运欣
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Patent Information
- Application Number
- CN202430385986.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Designs(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-23
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2039-06-23
Smart Images
Figure 000005_ABST
Abstract
1. The name of this design product: Mathematical decomposition ruler (addition and subtraction decomposition within 20). 2. Purpose of this design product: This design is used for mathematics learning. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.
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