slide rule

CN309838888SActive Publication Date: 2026-03-10福州市鼓楼区符宝音创教育咨询中心(个体工商户)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Designs(China)
Current Assignee / Owner
Filing Date
2025-07-28
Publication Date
2026-03-10

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Abstract

1. Name of the design product: Magic ruler for transposition. 2. Use of the design product: Place the magic ruler on the keyboard of a piano and play according to the color block prompts on the ruler. 3. Design points of the design product: combination of shape, pattern and color. 4. Picture or photo best indicating the design points: front view. 5. The design for which protection is sought contains color. 6. The design product is a thin product, and the left view, right view, top view and bottom view are omitted.
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