Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5248060 | Theft deterrent device for newspaper dispensing machines | Evelyn Friedman, William R. Carswell, Howard Shames | 1993-09-28 |
| 4747478 | Coin sorter and totalizer | Evelyn Friedman, William R. Carswell, Nicholas J. Frandino | 1988-05-31 |
| 4463874 | Vending machine having card moving fingers | Evelyn Friedman, William R. Carswell, Frank Kecseti | 1984-08-07 |