73065971
Oct 15, 1975
Apr 5, 1977
COMPRESSED AIR-OIL TORCH AND BLOWER CONTROLS, AIR/FUEL RATIO REGULATORS AND CONTROLLERS, PRESSURE REGULATORS, FURNACE PRESSURE CONTROLS, METERING ORIFICES, VALVES FOR MODULATING, HIGH/LOW, AND ON/OFF CONTROL OF FUELS, LIQUID OR GASEOUS OR AIR, ROTARY PORT TYPE VALVES OR BUTTERFLY TYPE VALVES OR THE VALVE PORTION OF AUTOMATIC REGULATORS OR AUTOMATIC CONTROLLERS AND ANNUNCIATORS
Electrical and Scientific Apparatus