Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6237587 | Woodburning fireplace exhaust catalytic cleaner | Ralph Sparling, Lance C. Grace | 2001-05-29 |
| 6049956 | Method and apparatus for spreading fiber bundles | Joseph Lee Lifke, Dana J. Finley, Brent Gordon | 2000-04-18 |