ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,795, issued on Sept. 8, was assigned to Mueller International LLC (Atlanta).

"Combined drilling and stopping system" was invented by Mohammad Unnus Qasim (Decatur, Ill.), Yixin Li (Savoy, Ill.) and Ryan Fairchild Larson (Decatur, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A machine includes a tool housing defining a housing cavity; a first tool coupled to a first linear drive mechanism, the first tool linearly repositionable along an axis by the first linear drive mechanism about and between a first retracted position and an extended position, the first tool positioned within the housing cavity in the first retracted position, the first too...