Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6155004 | Plastic workpiece and sheet thereof | Levitt D. Earhart, Robert C. Hawley | 2000-12-05 |
| 5953862 | Plastic workpiece and sheet thereof | Levitt D. Earhart, Robert C. Hawley | 1999-09-21 |