Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5979677 | Stackable collectible display stand with interchangeable scenic cards | Michael Pfeifer, Stuart Karten, Eric Olson | 1999-11-09 |
| D406961 | Stackable rectangular collectible display stand | Michael Pfeifer | 1999-03-23 |
| D406962 | Stackable semi-circular collectible display stand | Michael Pfeifer, Stuart Karten, Eric Olson | 1999-03-23 |