ALEXANDRIA, Va., July 9 -- United States Patent no. 12,349,660, issued on July 8, was assigned to RADIO SYSTEMS Corp. (Knoxville, Tenn.).

"Electrical stimulus device, such as an animal collar, and variable pulse stimulation circuit" was invented by Robert A. Nytko (Knoxville, Tenn.), Brent Andrew Goetzl (Orinda, Calif.) and Nicholas D. Renecle (Knoxville, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An animal collar includes a collar portion including a housing portion and a plurality of extension portions. Each extension portion can include an insert having a snap receiver aperture extending through the extension portion, as well as a strap receiver having a strap insertion slot and a snap fitting. ...