| 2720876 | Liquid fuel burning air heater assembly | |||
| 2685875 | Warm air heating furnace | |||
| 2581942 | Fuel burning air heater | |||
| 2561100 | Furnace construction involving removable combustion chamber housing | |||
| 2508131 | Floor furnace | |||
| 2496505 | Air-heating unit for buildings | |||
| 2482552 | Gas burning space heater | |||
| 2386115 | Heating system | |||
| 2249285 | Air conditioning unit for the relief of hay fever and asthma | |||
| 2178703 | Fuel burning apparatus | |||
| 0008104 | N/A |