73116700
Feb 22, 1977
Apr 27, 1982
High Pressure Gas Reducing Manifolds for Controlling the Flow and Pressure of Gas and Air Streams; Electrical Dew Point Indicators; Electrical Humidity Indicators; Cryostat Monitors; Back Pressure Valves for Scientific Instruments
Electrical and Scientific ApparatusGas and Air Dehydrators, Gas and Air Separators, Gas and Air Purifiers, Purifier Cylinders, Gas and Air Refrigerators, and Parts Thereof, and Desiccator Cartridges for Use in Gas and Air Dehydrators
Environmental Control Apparatus