74228549
Dec 5, 1991
Dec 6, 1994
spark erosion machine parts; namely, filters, erosion wire and consumption and investment materials; namely, graphite, copper alloys and tungsten silver of round, square and rectangular form
Machineryguides for non-insulated electrical wires and electric, and current transmitters of hard metals, ceramics, sapphires, diamonds and/or rubies
Electrical and Scientific Apparatus