ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,214, issued on Feb. 17, was assigned to Kubota Corp. (Osaka, Japan).

"Working machine" was invented by Keigo Honda (Osaka, Japan), Keigo Sato (Osaka, Japan) and Daiki Ryu (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Example embodiments of the present invention include a prime mover, an operator's seat provided at a distance from the prime mover, and a partition wall provided between the prime mover and the operator's seat, wherein the partition wall includes a pair of metal plates facing each other with a space therebetween and arranged in a direction from the prime mover toward the operator's seat."

The patent was filed on Nov. 26,...