ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,190, issued on April 15, was assigned to Kubota Corp. (Osaka, Japan).
"Working machine" was invented by Fumiya Yoshimura (Sakai, Japan), Kotaro Yamaguchi (Sakai, Japan), Kenji Tamatani (Sakai, Japan), Takanori Morimoto (Sakai, Japan) and Ken Sakuta (Sakai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A working machine includes a machine body, a lifting device to link a working device to the machine body, the lifting device being capable of moving up and down with the working device between a grounding state in which the working device is in contact with a ground and an ungrounding state in which the working device is out of contact with the g...