Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7845584 | Single motor blower | David J. Bowman, Frank C. Burroughs, Joseph C. Willingham, Sr. | 2010-12-07 |
| 7568642 | Single motor blower | David J. Bowman, Frank C. Burroughs, Joseph C. Willingham, Sr., William C. Richardson | 2009-08-04 |
| 7300005 | Single motor blower | David J. Bowman, Frank C. Burroughs, Joseph C. Willingham, Sr. | 2007-11-27 |
| 7270283 | Single motor blower | David J. Bowman, Frank C. Burroughs, Joseph C. Willingham, Sr. | 2007-09-18 |
| 7090441 | Insulation installation system | Roger L. Borgman, Joseph C. Willingham, Sr., Frank C. Burroughs | 2006-08-15 |