Blank hard drives for computers; Downloadable computer software and firmware for operating system programs; Downloadable computer software for computer system and application development, deployment and management; Electronic control systems for machines; Electronic recorders for storing and archiving information related to power system faults; Oil well Christmas trees in the nature of an assembly of valves, spools, and fittings that control the flow of oil or gas out of a well; Oil and gas well downhole survey and measurement equipment; Scientific apparatus for determining the water content in petroleum products
Electrical and Scientific Apparatus