Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6696212 | Single component toner for improved magnetic image character recognition | Dana G. Marsh, John F. Crichton, David D. Putnam | 2004-02-24 |
| 6294303 | Monocomponent developer containing positively chargeable fine power | David D. Putnam, Dana G. Marsh | 2001-09-25 |