Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5969739 | Ink-jet pen with rectangular ink pipe | John M. Altendorf, Joseph R. Elliot, Melissa D. Boyd, Kenneth L. Christensen, Brian D. Gragg +1 more | 1999-10-19 |
| 5812165 | Leak resistant ink-jet pen | Melissa D. Boyd, Kenneth L. Christensen, Naoto Kawamura | 1998-09-22 |