73236820
Oct 26, 1979
Sep 15, 1981
Flow and Level Instrumentation for the Monitoring and Control of Fluids-Namely, Differential Pressure Units, Recorders, Indicators, Switches, Controllers, Transmitters, Meters, Densitometers, Computers, Sealed Sensor Systems Consisting of Assemblies, Tubing and Differential Pressure Units and Analyzers
Electrical and Scientific Apparatus