ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,280, issued on Feb. 17.
"Pet door assembly and flap" was invented by George N. Davlantes (Palm Desert, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A modular pet door for use with a structure including an interior portion, an exterior portion and defining an opening is disclosed. The modular pet door includes an interior frame to seat on the interior portion of the structure, an exterior frame to seat on the exterior portion of the structure and coupled to the exterior frame, an interchangeable core assembly having a flap. The interchangeable core assembly is removably coupled to the interior frame. The flap is operable between an open posi...