Trillionaire Elon Musk bought the assets of Jacksonville-based APR Energy, according to a Federal Trade Commission filing. Duos Technologies Group Inc., which owned 5% of the business, disclosed the sale May 28 in a Securities and Exchange Commission filing but did not identify the buyer. A notice on the FTC’s website shows the agency issued an early termination notice for the deal May 14, meaning there would be no further antitrust review. The FTC notice lists Elon Musk as the buyer of the entity called New APR Energy LLC.