ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,539, issued on Feb. 17, was assigned to Intelligent Wellhead Systems Inc. (Calgary, Canada).

"Apparatus, system, and method for indicating a position of valve of wellsite equipment" was invented by Robert Duncan (Calgary, Canada), Murad Mohammad (Airdrie, Canada) and Lindsey William Harper (Calgary, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present disclosure relate to an apparatus, a system, and a method for detecting and indicating the operational position of a valve of wellsite equipment. The apparatus comprises a mount portion and a housing portion. The mount is operatively coupled to a non-moving part of the valve...