ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,462, issued on May 20.

"Milling tool" was invented by Paul Atkins (Phuket, Thailand).

According to the abstract* released by the U.S. Patent & Trademark Office: "A milling tool for cutting an inner casing string of a wellbore, the milling tool comprising a tool body, an extendable cut-out blade located in the tool body and configured to cut the inner casing string to form a starter window, and an extendable milling blade located in the tool body and configured to cut the inner casing string to form a full-length window, wherein the milling blade is configured to extend from the tool body independently from the cut-out blade, and wherein the cut-out blade and the milling blade are...