Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5517069 | Battery contacts having a high frequency energy filtering characteristics | Larry J. Zibrik | 1996-05-14 |
| D362649 | Stylus pen | Roman P. Rak, William E. Fenton | 1995-09-26 |
| D356299 | Portable data terminal | Robert W. Hamilton, Roman P. Rak | 1995-03-14 |