71692113
Jul 29, 1955
Oct 23, 1956
HEAT EXCHANGERS FOR GENERAL USE, SPECIAL PURPOSE HEAT EXCHANGERS INCLUDING: TANKLESS WATER HEATERS, HEAT EXCHANGERS FOR HEATING WATER WITH STEAM OR HOT WATER, HOT WATER STORAGE TANK WITH BUILT-IN HEATING COIL, WATER HEATER FOR INSERTION WITHIN FLUID HEATING SPACE OF A BOILER, WATER HEATER OF THE TANKLESS TYPE ARRANGED TO TRAP AIR IN THE CASING THEREOF WHEN CONNECTED TO A CLOSED HOT WATER HEATING SYSTEM, CONVERTORS FOR TRANSFERRING HEAT FROM STEAM TO WATER, AFTERCOOLERS FOR AIR AND GASES, AIR VENTS, OIL COOLERS FOR COOLING QUENCHING OIL, QUENCH TANKS, SELF-CONTAINED OIL COOLING UNITS INCLUDING: COOLERS, TANKS, PUMPS, TEMPERATURE AND ELECTRICAL CONTROLS, TANK SUCTION FUEL OIL HEATERS, AND FUEL OIL PREHEATERS
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