ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,189, issued on Sept. 15, was assigned to RTX Corp. (Farmington, Conn.).

"Symmetric open propulsor rotating patterns for aircraft" was invented by Jeffrey T. Morton (Manchester, Conn.), Jon E. Sobanski (Glastonbury, Conn.) and Andrew E. Breault (Bolton, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aircraft assembly includes first and second propulsion systems. Each propulsion system includes an open propulsor rotor and a turbine engine configured to drive rotation of the open propulsor rotor. The turbine engine includes a compressor section, a combustor section, a turbine section, a first rotating structure, a second rotating structure an...