ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,115, issued on Dec. 16, was assigned to Lamplight Farms Inc. (Menomonee Falls, Wis.).
"Non-gas fire pit" was invented by Steven Merrill Harrington (Cardiff by the Sea, Calif.), Michael Sawalski (Racine, Wis.), Ryan Butrym (Cardiff by the Sea, Calif.), Robert Woodruff (Oconomowoc, Wis.), Joel Kramka (Madison, Wis.), Megan Piunti (Fitchburg, Wis.) and Montel Caruthers (Madison, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fire pit includes an combustion chamber having at least one wall defining an inner chamber. At least one primary air aperture is defined through the inner chamber wall at a first, lower level, and at least one secondary air ...