ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,397,409, issued on Aug. 26, was assigned to Andreas Stihl AG & Co. KG (Waiblingen, Germany).
"Handheld work apparatus" was invented by Heiko Diehl (Esslingen, Germany) and Alexander Haertel (Ludwigsburg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A handheld work apparatus includes a housing and a work tool arranged on the front end. The housing has a back end to which an operator region is assigned. The housing has a first and a second shell separable in a separation direction. The operator region, in the region of the back end, is bounded by a tubular section of an outer housing wall. The outer wall of the first shell is reinforced in the r...