Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7100761 | Rotatable coin display | James A. Helzer | 2006-09-05 |
| 6394499 | Self-adhesive stamp construction | David P. Hanefeld, James A. Helzer, Alan Green, Vance P. Mattison, Julia J. Souther | 2002-05-28 |