%0 Journal Article %T HISTORICAL REVIEW OF CHANGES IN CULTIVATOR FRAME FORM FACTORS %A AVDEEV, D.A. %A CHEKUSOV, M.S. %K cultivator, frame, v-shaped design, x-shaped design, history of mechanical engineering, patent analysis %J Vestnik of Omsk SAU %D 2025 %N 59 %P 4 %I FSBEI HE Omsk SAU