Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D302550 | Combined data entry terminal and card reader | Thomas Bear, Rolf Pielemeier, William J. Pielemeier | 1989-08-01 |
| 4798581 | Apparatus for forming a visually detectable element | — | 1989-01-17 |