ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,921, issued on June 23.

"Greeting card operable for conversion to three-dimensional fire starter" was invented by Kevin A. Mainini (Knoxville, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A greeting card comprises a planar panel of combustible material. The planar panel has a front side on which a greeting message is provided, and a rear side on which instructions are provided for converting the planar panel into a three-dimensional fire starter structure. Scoring lines, such as perforations, are provided on the front and/or rear sides. The scoring lines define edges of elongate structural members that are operable to be mechanically separat...