Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5379875 | Coin discriminator and acceptor arrangement | William R. Carswell, Ronald D. Roberts, Larry Shulman, Gerald W. Smith | 1995-01-10 |
| 5248060 | Theft deterrent device for newspaper dispensing machines | Evelyn Friedman, William R. Carswell, Martin A. Borho | 1993-09-28 |