7 [ Machine tools for the processing of workpieces made from hard and brittle materials; machines for the production of optical lenses and replacement parts therefor; grinding and polishing machines; machines for the surfacing and edging of ophthalmic lenses; machines for centering, turning, milling, grinding, polishing and lapping of ophthalmic lenses; machines for plasma etching, ion-beam polishing and fluid-jet polishing of optical parts; machine parts and tools for all of the aforementioned, namely, turning tools with blades, milling heads with blades, sintered and electroplated special shape diamond cutters, diamond grinding tools and wheels, diamond hollow drills, diamond pellets, sintered and electroplated diamond grinding pads and foils, form tools for grinding, polishing and processing of optical parts, grinding pads, grinding tape and grinding foils with bound abrasive, polishing pads, discs, tapes, foils, cloth, felt and pitch; ] machine parts, namely, collet chucks [ and workpiece holders with membranes; machinery for semi-automatic and automatic application of protective foils and lacquers on semi-finished optical parts, and parts thereof; machinery for the blocking of semi-finished ophthalmic blanks, and parts thereof; circulation machines for liquid grinding, polishing, lapping, cooling and lubricating of materials, and parts thereof; machinery for mixing, preparing and filtering of liquid grinding, polishing, lapping, cooling and lubricating materials, and parts thereof; centrifuges and filter materials machine parts for filtering liquid coolants and cooling lubricants; machinery for deblocking of optical parts and spectacle lenses, and parts thereof; machines and parts thereof for cleaning and ultrasonic cleaning of semi-finished optical parts and ophthalmic lenses; machinery for etching of soiled substrate carriers; machinery for the refinement and coating of optical parts; machines for tinting of plastic lenses; high vacuum coating machines for the coating of spectacle lenses, optical lenses and optical parts; machinery for the sputtering coating of articles; machinery for applying coatings to articles via chemical vapor deposition; industrial surface treatment equipment, namely, plasma treatment systems comprised of high frequency, high voltage generator treating heads, nozzles and structural supports therefor; machines for applying hard or hydrophobic coatings on substrates; industrial machines for carrying, loading and positioning substrates, namely, swivel arm robots, suction devices, belt conveyors and tray magazines ]; machine parts, namely, workpiece holders for clamping of optical lenses [ ; air compressors; sand-blasting apparatus; multi-purpose, high-pressure steam cleaners ]