Yungen QIN

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Haidian District, Beijing, CN

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Patents Applicationslast 30 patents

Information Patent Application
BUTTON STRUCTURE, LIQUID STORAGE TANK, AND AUTOMATIC CLEANING APPAR...
- Publication number 20240415359
- Publication date Dec 19, 2024
- Beijing Roborock Technology Co., Ltd.
- Yungen QIN
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Application
DEBRIS CLEANING MECHANISM AND CLEANING DEVICE
- Publication number 20230292972
- Publication date Sep 21, 2023
- Beijing Roborock Technology Co., Ltd.
- Xing LI
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...