YC

Y. Cheng

IL International Quartz Limited: 1 patents #3 of 7Top 45%
Overall (All Time): #2,277,800 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5505382 Apparatus for distributing liquid solutions J. Michael Sealy 1996-04-09
4287513 Door knob alarm device Hau C. Lam, Thomas K. P. Lee 1981-09-01