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CHOW SANG SANG JEWELLERY COMPANY LIMITED
3 patents in portfolio
US12077839
utility
2024
Alloy with Interference Thin Film and Method for Making the Same
0 cites
US12054819
utility
2024
Amorphous Alloy
0 cites
US11874231
utility
2024
System and Method for Gemstone Identification
0 cites