Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6005631 | Methods and apparatus for organizing and searching an electronic programming guide | Peter B. Houser | 1999-12-21 |
| 5315775 | Digital sign | Thomas F. Parker, Daniel J. Yenglin | 1994-05-31 |
| 5269597 | Dispensing rack | Daniel J. Yenglin | 1993-12-14 |
| 5039999 | Accumulator and pressure control for ink-ket pens | Thomas H. Winslow | 1991-08-13 |