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Norbert Chow Cheung
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Kowloon, HK
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last 30 patents
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Patent Grant
Two-dimensional variable reluctance planar motor
Patent number
7,170,203
Issue date
Jan 30, 2007
The Hong Kong Polytechnic University
Norbert C. Cheung
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
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Patent Application
HID ballast with integrated voltage multiplier and lamp temperature...
Publication number
20090251076
Publication date
Oct 8, 2009
The Hong Kong Polytechnic University
Eric Ka Wai Cheng
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR