Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6789336 | Laterally adjustable, low profile trench-digging machine | Michael Collins | 2004-09-14 |
| 6619661 | Jigsaw puzzles for practicing arithmetic | — | 2003-09-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6789336 | Laterally adjustable, low profile trench-digging machine | Michael Collins | 2004-09-14 |
| 6619661 | Jigsaw puzzles for practicing arithmetic | — | 2003-09-16 |