ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,876, issued on March 17, was assigned to Pioneer Conveyor LLC (Mt. Lake Park, Moldova).

"Compact machine for carrying tools" was invented by Robert B. Larrick (Morgantown, W.va.), Timothy D. Beeman (Lonaconing, Md.), Reuben J. Ruggiero (Accident, Md.), Courtland J. Helbig (Morgantown, W.va.) and James C. Stephens III (Hagerstown, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is a relatively narrow tool carrying self-propelled machine that is particularly configured such that it can easily move through narrow mines while supporting any one of several tools. In one embodiment, the self-propelled machine is designed to be po...