Apparatus for heating installations, steam generating installations, refrigerating installations, drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems, ventilating apparatus for HVAC systems, apparatus for regulating water supply and sanitary purposes; HVAC systems comprising HVAC units, vents, lines, coils, thermostats, furnace, heat exchanger, condensing unit, refrigerant lines, fans for HVAC units, fabric air dispersion ducts for dist...

[ education services, namely, conducting classes and seminars in the field of construction and architecture; distributing course materials in connection therewith ]

Machine tools and power operated downhole tools for cutting metal tubular members in a borehole, namely, whipstocks, casing cutters, pilot mills, tapered mills, section mills, and multiple string cutters for use in wellbore construction and maintenance; cutting and orientation machines comprised of whipstocks, casing cutters, pilot mills, tapered mills, section mills, and multiple string cutters for cutting metal tubular members in a borehole, for use in wellbore construction and maintenance

downhole tools for use in casing milling, casing exiting, and wellbore construction and maintenance

interior and exterior wooden shutters for windows, doors and other openings