Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884505 | Method and apparatus for printing a light scannable image | Arthur L. Piepmeier, Jr. | 1989-12-05 |
| 4824621 | Method for making an ink-impregnated material | Arthur L. Piepmeier, Jr. | 1989-04-25 |