ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,607, issued on June 17, was assigned to Halliburton Energy Services Inc. (Houston).

"Downhole tool including related lug slots and lugs for coupling a milling tool and whipstock assembly" was invented by Christopher A. Grace (Carrollton, Texas) and Mark Christopher Glaser (Spring, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a milling tool, a whipstock assembly, a well system, and a method. The milling tool, in at least one aspect, includes a plurality of blades extending radially outward from a mill body, each of the plurality of blades having a primary surface and first and second side surfaces coupled to opposing sides of the ...