ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,478, issued on March 31, was assigned to YAMABIKO Corp. (Japan).
"Electric working machine" was invented by Hisao Kodama (Tokyo), Hisato Osawa (Tokyo), Takeshi Maeno (Tokyo) and Yusuke Morisaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hand-held electric working machine for cutting a work object is provided. The electric working machine comprises a working portion, a motor, a control unit, and a guide portion. The working portion is configured to cut the work object. The motor is configured to allow rotary power to be generated for allowing the working portion to drive. The control unit is configured to electrically control rotation o...