Chemical for use as a fluid loss additive employed to minimize fluid losses in subterranean formations; chemical agents for use in treatment, servicing, and working of oil wells and gas wells, namely, subterranean formation filling agents, proppants and abrasive agents for subterranean formations

eyeglasses, lenses for eyeglasses contact-lenses

metal foil patterns for application to products

metal engraving plates and photographic and lithographic print libraries of engraving plate images