Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6694968 | Linear multi-oil furnace and heat exchanger | Douglas Stoltzfus, Eli Stauffer, Frederick W. Phillips | 2004-02-24 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6694968 | Linear multi-oil furnace and heat exchanger | Douglas Stoltzfus, Eli Stauffer, Frederick W. Phillips | 2004-02-24 |