Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4709630 | Printing wheel setting and aligning apparatus | David Wilkins, Roger E. Walker, Harry C. Powell, Jr. | 1987-12-01 |
| 4552065 | Printing in register on sheets | Donald G. Billington, Harry C. Powell, Jr., Roger E. Walker, David Wilkins, Stuart Weaver | 1985-11-12 |