Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5742308 | Ink jet printer cartridge refilling method and apparatus | Bruce Cowger, Robert R. Beeson | 1998-04-21 |
| 5505339 | Pressure-sensitive accumulator for ink-jet pens | Bruce Cowger, Marc A. Baldwin, Gary Tarver, John G. Wydronek, George M. Custer | 1996-04-09 |
| 5409134 | Pressure-sensitive accumulator for ink-jet pens | Bruce Cowger, Marc A. Baldwin, Gary Tarver, John G. Wydronek, George M. Custer | 1995-04-25 |