Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6374731 | Lithographic newspaper printing press | Peter Walter Walczak, Charles Henry Dufour, Michael J. Stevenson, John Sheridan Richards | 2002-04-23 |
| 6371025 | Apparatus and method for cleaning a tubular printing blanket | Charles Henry Dufour, David Crowell Emery | 2002-04-16 |