Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6494562 | Method and apparatus for identifying a sales channel | Ray A. Walker, Robert E. Haines | 2002-12-17 |
| 6488352 | Method and apparatus for checking compatibility of a replaceable printing component | Brian L. Helterline, Winthrop D. Childers, Ronald R. Paulsen | 2002-12-03 |
| 6345891 | Method and apparatus for specifying ink volume in a multichamber ink container | Winthrop D. Childers, Ray A. Walker, Brian L. Helterline | 2002-02-12 |