Educational services, namely, providing classes, seminars, conferences, workshops, tutoring, instruction, professional training, and curriculum development in the fields of test preparation, professional training, curriculum development and academic subjects taught at the elementary, secondary, college, graduate and professional levels

unwrought, partly wrought, wrought and mechanically alloyed metals; unwrought, partly wrought, wrought and mechanically alloyed nickel alloys; unwrought, partly wrought, wrought and mechanically alloyed nickel-chromium alloys; nickel-chromium alloys; nickel-chromium alloys in the form of - bars, blooms billets, forgings, plates, rods sheets, strip, tubing and wire; welding rod; and, welding

NICKEL ALLOYS AND ALLOYS OF NICKEL, CHROMIUM, AND IRON

Air-conditioning apparatus; air filtering installations; air purifying apparatus and machines; disinfectant apparatus for medical purposes; electric air deodorizers; electric heaters for commercial use; furnaces; gas burners; germicidal lamps for purifying air; heating apparatus for solid, liquid or gaseous fuels; heating boilers; heating elements; heating installations; laundry drying machines; lighting apparatus, namely, lighting installations; sanitary installations in the nature of steam ...