Diffuser systems for discharging oxygen-containing gas bubbles into aqueous media comprising of diffusers, gas supply conduits, couplings, manifolds and stands, and components and [are placement] * replacement * parts thereof

fluro silicone acrylate co-polymer sold as an integral component of contact lenses and plastic blanks for contact lenses

overhaul and repair services in the aerospace industry

FILTRATION MEDIA IN THE NATURE OF MOLDED PLASTIC SHAPES; AND FILTRATION SYSTEMS FOR POTABLE WATER, WASTE WATER AND SEWAGE TREATMENT COMPRISING THE ABOVE MENTIONED MEDIA, SHELLS, DISTRIBUTORS, DRAINS, PUMPS AND PIPING

turf aeration machine