Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4523834 | Dry toner replenishing apparatus | Roderick N. Schmaling | 1985-06-18 |
| 4402594 | Fire extinguishing device for electrophotocopier | Eugene A. Wirth | 1983-09-06 |
| 4341945 | Fire extinguishing device for electrophotocopier | Eugene A. Wirth | 1982-07-27 |