ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,138, issued on June 3.

"Mailbox post protector with internal toolless interlock" was invented by John G. Fischer (Irving, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A post protector is disclosed that provides protection for the lower portion of a mailbox post. Protection is provided against string trimmers and edgers and other impacting implements in a landscape environment. A shielded chamber receives latches that allow simple and concealed assembly without the need for fasteners or tools. In one embodiment, the post protector may be stacked for creating a unique visual effect and added protection. In another embodiment, perimeter flanges ...