ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,784, issued on April 22.

"System and method for indicating voltage using a twist on connector" was invented by Daniel S. Palka (Warren, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A voltage indicating twist-on wire connector configurable for indicating whether voltage is present in at least one electrical line connected to the connector, the connector comprising a housing, a spiral coil, a set of contacts, a resistor, and an indicator, wherein the spiral coil, the set of contacts, the resistor, and the indicator are electrically connected together on a circuit. A testing tool is used in combination with the connector, the testing tool compris...