ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,546, issued on Feb. 3.

"Tube notching apparatus with adjustable positioning features" was invented by Robert Kyle Hughes Jr. (Johnson City, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary tube notching apparatus is provided that is capable of operable attachment to a powered rotational drive device. The apparatus comprises a tube support assembly defining an aperture for receiving a tube and having a clamp for securing the tube against movement in relation to the aperture. A shaft assembly is provided for receiving a cutting tool, and a carriage assembly is rotatably mounted to the shaft assembly. The carriage assembly has at least one ...