ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,887, issued on April 22, was assigned to K&M Shooting Products LLC (Holland, Mich.).
"Ported press adapter press mandrel system and method of using same" was invented by Roger G. Miller Jr. (West Olive, Mich.) and David A. Allen (Grandville, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A Ported Press Adapter Expand Mandrel System (PPAEMS) includes a Ported Press Adapter (PPA) as a significant advancement beyond the Expand Mandrel Window Riser (EMWR) by adding multiple radial holes to provide increased light intrusion, full 360deg visibility, and balanced stress distribution with a pattern of port holes, slots, or other openings. Additional cl...