ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,048, issued on May 20, was assigned to JOSEF HOELLER GMBH (Amstetten, Austria).
"Cooling and heating plate" was invented by Josef Holler (Neufurth, Austria) and Joachim Holler (Zeillern, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cooling and heating plate, in particular for serving food and beverages, is connected to a cooling unit and an electrical heating device, preferably a silicone panel heater, is also provided on the under side of the plate. The plate is a multilayered plate having an upper plate, preferably of chrome nickel steel, and an aluminum plate situated thereunder. At least one steel pipe, which is preferably seamless w...