ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,998, issued on April 29, was assigned to The Boeing Co. (Arlington, Va.).

"Serrated fitting" was invented by Kenneth D. Cominsky (Lake Stevens, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A serrated fitting and method for installing fixed length roller tray segments spanning an aircraft fuselage integration zone. The serrated fitting includes a first surface for attachment to a fixed length roller tray segment. The serrated fitting also includes a serrated surface for engagement with a serrated plate attached to a floor beam of an aircraft. A fastener connects the serrated surface to the serrated plate and the floor beam through a pre-drille...