ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,254, issued on April 21, was assigned to Littelfuse Inc. (Chicago).

"Battery master disconnect switch with integrated voltage indicator" was invented by David P. DeHorn (Glenview, Ill.), Sean McDonnell (Plainville, Conn.) and Brian Stuckman (Plainville, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A battery master disconnect switch includes a front panel and a back panel. The front panel has a selector knob for selecting between multiple positions. The back panel has a primary terminal, a secondary terminal, and an auxiliary terminal. The primary terminal is for connection, using a first cable, to a primary battery. The secondary terminal i...