ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,471,644, issued on Nov. 18, was assigned to CARDINAL ENGINEERING LLC (Annapolis, Ind.).
"Extremity heater" was invented by Barry E. Mapen (Stonington, Conn.), Christian A. Whitney (Chester, Conn.) and Kevin P. Richards (Narragansett, R.I.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a heating system including: a heating garment formed as a tubular sleeve, the heating garment configured for being worn on a limb, having a cylindrical shape, a proximate end, a distal end that is axially spaced from the proximate end, a dorsal side, a ventral side that radially opposes the dorsal side, a proximate opening at the proximate end, and a distal op...