Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4511199 | Card frame with card guides and cards guided therein | David P. Erlam | 1985-04-16 |
| 4509810 | Rack with card frames adjustable on lateral slide guides | David P. Erlam | 1985-04-09 |