Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4520451 | Programmable vending machine accountability apparatus | — | 1985-05-28 |
| 4272757 | Vending machine accountability system | Elwood E. Barnes | 1981-06-09 |
| 4267915 | Vending apparatus price interface | Paul J. Beshenich | 1981-05-19 |