ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,540, issued on April 15, was assigned to The Boeing Co. (Arlington, Va.).

"Positioning tool for apparatus manufacturing" was invented by Holger Tietje (Uplengen, Germany), Mats Wachtendorf (Varel, Germany), Hans-Joachim Neustadt (Hude, Germany) and Orest Silchuk (Covington, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A positioning tool (100) includes a lift mechanism (102), multiple curved rails (106), a carriage (110), and multiple clamps (114). The lift mechanism (102) has multiple stages (104) configured to move linearly between a retracted position (152) and an engaged position (154). The curved rails (106) are mounted on the stages (104...