| 2308555 | Fuel burner system | |||
| 2286296 | Temperature control system | |||
| 2196377 | Fluid-heating method and apparatus | |||
| 2172105 | Method of firing furnaces | |||
| 2039910 | Dual oil burner control system | |||
| 1938089 | Oil burner apparatus | |||
| 1835611 | Boiler control system | |||
| 1670626 | Furnace-firing apparatus | |||
| 1637820 | Automatic heater | |||
| 1610007 | N/A |