ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,123, issued on Nov. 18, was assigned to Sermeta (France).
"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 heat exchanger (1'), comprising: -a gas-tight casing (2), -at least one tube (4) made from a good thermally conducting material and inside which a fluid to be heated can circulate, this tube (4) being helically wound so as to form a helical winding (40) having a longitudinal axis (X-X') which is arranged inside said casing (2), -means for conveying and/or for producing hot gases inside said casing (2), such as a burner (3), so as to define a combu...