ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,152, issued on July 8, was assigned to Vermeer Manufacturing Co. (Pella, Iowa).

"Horizontal directional drilling system and method" was invented by Hans Frederick Kelpe (Pella, Iowa) and Alan Wilson-Langman (Pleasant Hill, Iowa).

According to the abstract* released by the U.S. Patent & Trademark Office: "An adapter assembly for connection between a drill head of a horizontal directional drilling system and a utility line. A central housing body defines an interior space. A first end cap is secured to a first end of the central housing body. A second end cap is secured to a second end of the central housing body and configured to attach to the utility line. An electromagnetic (EM) ...