RK

Roumen Kaltchev

Overall (All Time): #2,221,791 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6312592 Clarifier for liquids laden with suspended matter 2001-11-06
6174435 Device for clarifying a charged liquid by flotation 2001-01-16