73147181
Nov 3, 1977
Sep 4, 1979
OZONATION SYSTEMS SOLD AS A UNIT COMPRISING COMPRESSOR, AIR COOLER, FILTER, AFTER COOLER, OZONATOR, HIGH VOLTAGE TRANSFORMER, AND CONTROL PANEL; WATER LIQUID FLOW CONTROLLERS; LIQUID FLOW INDICATORS; FLUID GAGES; HYDRAULIC LEVEL CONTROLLERS; AND FLUID FLOW MEASURING METERS
Electrical and Scientific Apparatus