Utility model patent No. 111604 of December 20, 2011 “Design of pressure conduit made of high-strength spheroidal graphite pipes used in different soils (Variants)”20.02.2021
Utility model patent No. 113281 of February 10, 2012 “Drains for draining urban areas and protecting underground structures.”20.02.2021
Utility model patent No. 110760 of November 27, 2011 “Design of input and output heads on rainwater drainage pipelines”20.02.2021
Utility model patent No. 108541 оf September 20, 2011 “Piping of water supply systems made of cast iron pipes”17.02.2021
