Trapezoidal Design Design Patent Cheti-2009

On May 19th , 2010, VIGA Trapezoid basin mixer which designed by designer Peter Kuang, amepata cheti cha patent ya muundo na Ofisi ya Mali ya Akili ya Jimbo la P.R.C. Cheti hapana. Ref.:1220930 which with the valid till May 18th 2020.