NK

Ngan Chi Keung

O2 O2Cool: 2 patents #5 of 10Top 50%
📍 Tuen Mun, CN: #2 of 9 inventorsTop 25%
Overall (2019): #135,589 of 560,194Top 25%
2
Patents 2019

Issued Patents 2019

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D858182 Bottle closure 2019-09-03
D857445 Bottle closure 2019-08-27