SH

Stone Huang

Overall (All Time): #2,207,457 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6640352 Warm/cold double-circulation water filter system and swimming pool arrangement — 2003-11-04
6425999 Warm/cold double-circulation water filter system and swimming pool arrangement — 2002-07-30