ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,653, issued on Nov. 3.
"Exhaust muffler for internal combustion engines" was invented by David Akiba Borla (Thousand Oaks, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Various implementations include a muffler including a shell and a tube assembly. The shell defines a shell cavity and has a shell longitudinal axis, a shell first end, and a shell second end. The shell first end and the shell second end each define a shell opening extending to the shell cavity. The tube assembly is disposed within the shell cavity. The tube assembly includes three or more nested tubes. Each of the three or more nested tubes has a tube longitudinal axis paralle...