Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290716 | Laser printer | Stephen Peart, Sigmar Willnauer | 1987-07-07 |
| 4487602 | Injection device | Allen D. McNaughton, Steven R. Umbach | 1984-12-11 |
| 4403989 | Injection device | Allen D. McNaughton, Steven R. Umbach | 1983-09-13 |