ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,778, issued on Sept. 23, was assigned to Amesbury Industries Inc. (Edina, Minn.).

"Electrical linkage assembly for windows or doors" was invented by Joel Douglas (Dodge Center, Minn.) and Gregory J. Vetter (Owatonna, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrical linkage assembly for a window or door includes a frame mount, a sash mount, a first link arm, and a second link arm. A first pivot joint is formed between the frame mount and the first link arm, a second pivot joint is formed between the first and second link arms, and a third pivot joint is formed between the second link arm and the sash mount. One or more electrical w...