Patents for F24H 9 - Details (27,146)
07/1977
07/26/1977US4037582 Oil stove
07/19/1977US4037080 Protection and control of electric immersion-type heater
07/12/1977US4034911 Burner control system
07/12/1977US4034803 Corrosion resistant tubular air preheater
07/05/1977US4033714 Gaseous fuel burners
06/1977
06/28/1977US4032748 Scale deposit removal arrangement for electric water heaters and vaporizers
06/28/1977US4031916 Fitting for a radiator in a single duct heating system
06/14/1977US4029937 Control system for electrically conductive liquid heating apparatus
06/14/1977US4029451 Gas burning apparatus
05/1977
05/24/1977US4025291 Energy conversion system
05/24/1977US4025286 Apparatus for improving the operation of oil-fired boilers
05/24/1977US4025041 Safety valve
05/17/1977US4023923 Burner for heating an airstream
05/10/1977US4022163 Boiler using combustible fluid
05/03/1977US4020822 Multi-fuel forced air furnace
05/03/1977US4020772 Process to protect process heater casing from corrosion
04/1977
04/26/1977US4019492 Method and apparatus for automatic furnace
04/19/1977US4018982 Housing structure for electrical apparatus
04/12/1977US4017714 Segmented sacrificial anode attachment to water heating element
04/05/1977US4016402 Water heater control system
03/1977
03/29/1977US4014316 Systems for heating fluids
02/1977
02/15/1977US4007726 Forced air assembly for space heater
02/15/1977US4007712 Water heater
01/1977
01/11/1977US4002872 Electrical switch housing detachably mountable on a gas valve structure
01/11/1977US4002148 Grate assembly for a boiler
01/04/1977US4001547 Electric heating elements
01/04/1977US4000735 Insert for the furnaces of boilers
11/1976
11/30/1976US3994098 Apparatus for regulating the lapping pressure during lapping of two bevel gears in a lapping machine
11/16/1976US3992608 Combination attachment for water heater electric heating element and thermostat
11/16/1976US3992137 Gas burner
11/02/1976US3989928 Method and apparatus for cyclically controlling the energization of home water heaters
09/1976
09/28/1976US3982525 Hot air furnace
09/21/1976US3981316 Pressure and temperature-responsive control means
08/1976
08/17/1976US3975620 Control system for charging and discharging an electric storage heater
07/1976
07/20/1976US3970142 Fuel saving device
06/1976
06/01/1976US3961156 Combination temperature and pressure relief valve with energy cutoff switch
05/1976
05/11/1976US3955909 Reduction of gaseous pollutants in combustion flue gas
05/11/1976US3955556 Catalytic fluid heater
04/1976
04/06/1976US3948439 Sediment buildup warning device for water heaters
03/1976
03/02/1976US3940837 Hot air furnace with improved heat exchanger construction
02/1976
02/17/1976US3939456 Heating plant monitor system
02/03/1976US3935855 Air heater, especially for connection to a central heating system
01/1976
01/27/1976US3934796 Heating system with fuel saving draft retarder
01/27/1976US3934556 Boiler using combustible fluid
01/27/1976US3934555 Boiler using combustible fluid
01/20/1976US3934117 Electric fluid heating device