GS0091: High voltage electrical transformer components, namely, an inert air system, namely, a system of providing an inert air cap as a means of oil preservation from moisture to monitor and regulate the supply and working pressures and alarm upon pressures out of tolerable ranges; dehydrator breathers, namely, air regulating systems which remove moisture from high voltage electrical equipment
GS0071: Load tap changer oil filtration for use in high voltage electrical transformers
CC0000: Color is not claimed as a feature of the mark.
GS0111: Nitrogen generators and coefficient heaters for use in high voltage electrical equipment