ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,464,972, issued on Nov. 11, was assigned to Great Plains Manufacturing Inc. (Salina, Kan.).
"Seed-flow adjustment system" was invented by Jacob R. Riffel (Salina, Kan.), Gregory W. Arnett (Solomon, Kan.) and Verne A. Hubalek (Lindsborg, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A distribution tower comprising an upright conduit for pneumatically conveying particulate material in a primary stream. The tower additionally includes a distribution head at the upper end of the conduit, with the distribution head comprising a plenum chamber for receiving the primary stream of particulate material from the conduit. The distribution head further compri...