ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,976, issued on Feb. 3, was assigned to UL LLC (Northbrook, Ill.).

"Systems and methods for parallel electrical endurance testing of contacts" was invented by Michael Howard SaLee (Island Lake, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for testing a plurality of electrical switches including contacts to connect multiple sample switches to an input and an output. A power source is connected to the inputs of the sample switches, and other switches are connected to the outputs of the sample switches so that the sample switches may be selectively connected to either a make load or a break load to perform testing on the sample switch...