7 Diamond coated machine parts, diamond coated machine tools, diamond cut-off wheels for machines, diamond cutting tools for machines, diamond drill bits for machines, diamond tipped machine parts, diamond tipped machine tools, diamond tips for tool bits for machines, diamond tools for cutting for machines, diamond tools for drilling for machines, diamond tools for grinding for machines, diamond tools for milling for machines, diamond tools for polishing for machines, diamond turning machines, diamond turning machines for lathing intra-occular lenses, diamond turning machines for lathing of contact lenses, glaziers' diamonds (parts of machines), machines for use with diamond tools, presses for use in the production of industrial diamonds (machines)