Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6368101 | Flame retention head and nozzle block assembly for waste oil-burning systems | Wayne Robertson, Christopher L. Gansel | 2002-04-09 |
| D447554 | Flame retention head for a waste oil-burning system | Wayne Robertson, Christopher L. Gansel | 2001-09-04 |
| 5879149 | Fuel control and preheating system for a fuel-burning heater | Wayne Robertson, Christopher L. Gansel, Gregory A. Agee | 1999-03-09 |
| 5435718 | Fuel shut-off system for fuel-burning heater | — | 1995-07-25 |
| 5372484 | Fuel delivery system for fuel-burning heater and associated components | Wayne Robertson, Christopher L. Gansel | 1994-12-13 |
| 5363836 | Furnace with supplementary heat exchange means | — | 1994-11-15 |
| 4955359 | Furnace with counterflow heat exchange means | Myron T. Cooperrider | 1990-09-11 |
| 4532914 | Portable LP space heater | David D. Thomas | 1985-08-06 |
| 4487571 | Oil combustion system | Wayne Robertson, Keith E. Briggs | 1984-12-11 |
| 4443187 | Portable heater with integrated control system | Robert S. Shaftner, Norman D. Chambers, Michael Kagan | 1984-04-17 |
| D264374 | Portable heater | Robert F. Shaftner, Harry J. Giambrone | 1982-05-11 |
| 4313417 | Portable space heater | Robert F. Shaftner | 1982-02-02 |
| D255599 | Window heater | Robert F. Shaftner, Harry J. Giambrone | 1980-06-24 |
| 4201544 | High pressure heater | William E. Gustafson | 1980-05-06 |