74225687
Nov 27, 1991
Nov 24, 1992
pressure absorption vessels, carbon molecular sieves, vacuum pumps, compressors, heat exchangers, valves, gas sensors, piping and gas analyzers, sold as a unitary installation for the purpose of processing and enriching natural gas to obtain pipeline quality methane; pressure absorption vessels, carbon molecular sieves, vacuum pumps, compressors, heat exchangers, valves, gas sensors, piping, gas analyzers and chromatographs, sold as a unitary installation for the purpose of processing and enriching natural gas to obtain pure grade A helium
Electrical and Scientific Apparatus