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Patents Grants
last 30 patents
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Patent Grant
Railway monitoring system
Patent number
8,861,973
Issue date
Oct 14, 2014
The Hong Kong Polytechnic University
Hwa Yaw Tam
B61 - RAILWAYS
Patents Applications
last 30 patents
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Patent Application
Method of Fabricating Polymer Optical Fiber Preform For Polymer Opt...
Publication number
20100140820
Publication date
Jun 10, 2010
Hong Kong Polytechnic University
Hwa-Yaw Tam
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Application
Railway Monitoring System
Publication number
20080019701
Publication date
Jan 24, 2008
Hwa Yaw Tam
B61 - RAILWAYS