Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368010 | Multi-position forced air furnace | Paul T. Richardson, Gerald K. Gable | 1994-11-29 |
| 5301654 | Heat-exchanger especially for forced air furnaces | Paul T. Richardson, David Langenkamp, Gerald K. Gable | 1994-04-12 |