ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,208,674, issued on Jan. 28, was assigned to Kubota Corp. (Osaka, Japan).
"Tractor" was invented by Kenichiro Tsuji (Osaka, Japan), Hiroki Nakatsuka (Osaka, Japan) and Ryuichi Inoue (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tractor includes: a vehicle body; an engine disposed in an engine compartment; a radiator that is disposed, in the engine compartment, further toward a vehicle-body front side than the engine and cools the engine; an exhaust-gas cleaning device that purifies exhaust gas exhausted from the engine using a reducing agent; a reducing-agent tank that stores the reducing agent supplied to the exhaust-gas cleaning device...