ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,602, issued on July 7, was assigned to Sermeta (Morlaix, France).

"Condensation heat exchanger" was invented by Joseph Le Mer (Plouezoch, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a condensation heat exchanger (10) comprising: -at least one tube (7) in the form of a helical winding (70), having a planar front face (71) and a planar rear face (72) and being housed in a casing (2), -means (5) for producing a hot gas inside said casing, -a discoid deflector (8) which is provided with a peripheral flange (823) and is arranged in the helical winding (70), such that the flange thereof is inserted in a gap betwee...