William K.Y. Cheung

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Pat Heung, HK

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Patents Grantslast 30 patents

Information Patent Grant
Tilt sensor for cleaning device
- Patent number 8,161,596
- Issue date Apr 24, 2012
- Oreck Holdings LLC
- William K. Y. Cheung
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
TILT SENSOR FOR CLEANING DEVICE
- Publication number 20100186187
- Publication date Jul 29, 2010
- William K.Y. Cheung
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE