75692364
Apr 27, 1999
Mar 28, 2000
Vacuum pump systems for filling neon tubes with gas, namely diffusion pumps, manifolds, vacuum gauges, bombarding milliamp meters, bombarding temperature gauges, and glass tubing with fluid control valves and joints
MachineryElectrodes for use in neon tubes, vacuum gauges, bombarding milliamp meters, and bombarding temperature gauges
Electrical and Scientific Apparatus