Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7000900 | Hydraulically powered reel lift | Robert D. McKenney, Francis Stewart | 2006-02-21 |
| 6276665 | Mobile floor crane | Joseph O. Hawkins, John H. Blackburn, Roy David Brookshire, Frances Hawkins Stewart | 2001-08-21 |