Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8490747 | Telescoping project tray | David A. Winslow, Yick B. Shum, Marcus Burzynski | 2013-07-23 |
| D422717 | Ladder top | Frederick J. Bartnicki, James Hand, Randall Bell, Edward E. Heald | 2000-04-11 |
| D413990 | Front face of a ladder top | Frederick J. Bartnicki, James Hand, Randall Bell, Edward E. Heald | 1999-09-14 |