ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,746, issued on Oct. 27, was assigned to TECNA S.P.A. (Castel San Pietro Terme, Italy).

"Welding apparatus" was invented by Damiano Bergami (Castel Guelfo di Bologna, Italy) and Dante Belluzzi (Bologna, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A welding apparatus includes a movement assembly for at least one electrode configured to be passed through by current for the execution of welding treatments. The assembly includes at least one cylinder and at least one stem which rigidly supports the electrode; the stem is at least partially accommodated in the cylinder and is coaxially movable with an alternating straight motion along the longitu...