Yiu Leung Man

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Hong Kong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Double brush assembly
- Patent number 6,873,083
- Issue date Mar 29, 2005
- Johnson Electric S.A.
- Fretrick Siu Kwan Ko
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
MOTOR
- Publication number 20110031835
- Publication date Feb 10, 2011
- Harry Hang Fung CHANG
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Double brush assembly
- Publication number 20040183394
- Publication date Sep 23, 2004
- Fretrick Siu Kwan Ko
- H01 - BASIC ELECTRIC ELEMENTS