Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D348284 | Stackable tray for paper stock and drawings | Richard K. Bergquist, David Martin | 1994-06-28 |
| 5318182 | Stackable and reversible trays for storing drawing sheets, paper stock, and the like | Richard K. Bergquist, David Martin | 1994-06-07 |