Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7493684 | Method of loading an article to an exterior of an aircraft | Robert Callahan, William York | 2009-02-24 |
| 7104503 | Aircraft loading apparatus | Robert Callahan, William York | 2006-09-12 |