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Patents Grantslast 30 patents

Information Patent Grant
Light-emitting device inside toy
- Patent number 12,331,910
- Issue date Jun 17, 2025
- Rongchang Cao
- F21 - LIGHTING

Patents Applicationslast 30 patents

Information Patent Application
LIGHT-EMITTING DEVICE INSIDE TOY
- Publication number 20240342626
- Publication date Oct 17, 2024
- RONGCHANG CAO
- A63 - SPORTS GAMES AMUSEMENTS