Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6430270 | Automatic conversational record | Joseph M. Cannon, James A. Johanson | 2002-08-06 |
| 5217090 | Vertically adjustable work station assembly | Charles J. Billington, III | 1993-06-08 |
| 5158157 | Vertically adjustable work station assembly | Charles J. Billington, III | 1992-10-27 |
| 5131503 | Vertically adjustable work station assembly | Charles J. Billington, III | 1992-07-21 |
| 5119907 | Vertically adjustable work station assembly | Charles J. Billington, III | 1992-06-09 |
| D257541 | Nail buffer | Gerald Yablans, Stephan A. Tuchman | 1980-11-18 |