Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4613303 | Combustion air control in an in-line flame arrestor | William R. Willis, James D. Hunter | 1986-09-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4613303 | Combustion air control in an in-line flame arrestor | William R. Willis, James D. Hunter | 1986-09-23 |