Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9527448 | Retractable stair system with precision elevation control | Jack Kay | 2016-12-27 |
| 5649221 | Reverse electronic dictionary using synonyms to expand search capabilities | H. Vance Crawford | 1997-07-15 |