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last 30 patents
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Patent Grant
Hazard warning means for vehicles
Patent number
7,493,217
Issue date
Feb 17, 2009
The Hong Kong Polytechnic University
Kok Keung Lo
B60 - VEHICLES IN GENERAL
Patents Applications
last 30 patents
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Patent Application
Hazard warning means for vehicles
Publication number
20050154501
Publication date
Jul 14, 2005
The Hong Kong Polytechnic University
Kok Keung Lo
B60 - VEHICLES IN GENERAL