Patents/Inventors

Wai Kei Cheung

Hong KongCN1 patent

2 Patents

US120778392024
Alloy with Interference Thin Film and Method for Making the Same
CHOW SANG SANG JEWELLERY COMPANY LIMITED
0 cites
US120548192024
Amorphous Alloy
CHOW SANG SANG JEWELLERY COMPANY LIMITED
0 cites