ALEXANDRIA, Va., July 16 -- United States Patent no. 12,357,058, issued on July 15, was assigned to CSR Developments LLC (Encino, Calif.).

"Interchangeable footbed for footwear and a modular shoe system having an interchangeable footbed" was invented by Jeffrey Christopher Rhoads (Encino, Calif.) and Sarah Kenslow Rhoads (Encino, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A footbed for a modular shoe system, a modular shoe system, and an interlocking fastener system for a footbed or for a modular shoe system, are provided. The interlocking fastener system includes a plurality of interlocking elements on a footbed configured to interlock with a plurality of complementary interlocking elements on a ...