ALEXANDRIA, Va., June 4 -- United States Patent no. 12,322,942, issued on June 3.

"Rigid bus ducts" was invented by Martin Cox (Delta, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rigid bus duct comprising a pair of side rails extending in a longitudinal direction, a plurality of support members extending between the side rails in a transverse direction, and a plurality of insulated conductors extending longitudinally, and held in a fixed relationship to one another by the plurality of support members. The plurality of insulated conductors are arranged in groups including a plurality of high current phase groups and a neutral group, and a plurality of shielding structures connected between the sup...