[ GAS-FIRED, LIQUID-FUEL-FIRED AND SOLID-FUEL-FIRED WATER HEATERS FOR HOUSEHOLD AND INDUSTRIAL HOT-WATER SUPPLY AND FOR CENTRAL HEATING OF BUILDINGS, COMPRISING INSTANTANEOUS WATER HEATERS AND STORAGE WATER HEATERS; HEATING BOILERS FOR HOT-WATER SUPPLY AND FOR CENTRAL HEATING; ROOM HEATERS AND STOVES, BEING SEPARATE HEATING UNITS; COFFEE AND TEA INFUSERS TO BE USED WITH WATER HEATERS; PARTS OF AND ACCESSORIES FOR THE BEFORE MENTIONED GOODS-NAMELY, GAS BURNERS, LIQUID FUEL BURNERS, ] CONTROL SYSTEMS OPERATED AUTOMATICALLY IN RESPONSE TO TEMPERATURE CONDITIONS, CONTROL SYSTEMS FOR AUTOMATICALLY SHUTTING OFF THE FUEL SUPPLY UPON [ LACK OF WATER, CONTROL SYSTEMS FOR AUTOMATICALLY SHUTTING OFF THE FUEL SUPPLY UPON ] EXTINGUISHMENT OF A BURNER [ , WASTE AND BURNT GAS CONDUITS, WASTE GAS PIPES, DRAUGHT DIVERTERS FOR PREVENTING BACK-FLOW OF WASTE GASES, WIND GUARD DEVICES, CONTROL SYSTEMS FOR AUTOMATICALLY PREVENTING BACKFLOW OF WASTE GASES ]