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Ng Wing Leung

RM Royal Appliance Mfg.: 1 patents #72 of 121Top 60%
Overall (All Time): #3,248,972 of 4,157,543Top 80%
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Patent #TitleCo-InventorsDate
7937804 Belt lifter mechanism for vacuum cleaner Chris Charlton, Steven Wen 2011-05-10