U.S. federal trademark · Serial No. 87536706
HEAT EXCHANGERS, OTHER THAN PARTS OF MACHINES; EXHAUST GAS, AIR AND WATER HEAT EXCHANGERS, OTHER THAN PARTS OF MACHINES; HEAT REGENERATORS; HEAT AND MOISTURE EXCHANGERS FOR NON-MEDICAL USE; ENTHALPY EXCHANGERS, OTHER THAN PARTS OF MACHINES; HEAT ACCUMULATORS; POTENTIAL HEAT ACCUMULATORS; CHEMICAL HEAT ACCUMULATORS; HYDRATE HEAT ACCUMULATORS; ENERGY RECOVERY EXCHANGERS, OTHER THAN PARTS OF MACHINES; ENTHALPY PLATE EXCHANGERS, OTHER THAN PARTS OF MACHINES
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