Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7942415 | Mail sorting machine with improved diverter panel | John W. Sheffield, John Ivey | 2011-05-17 |
| D603629 | Double door for a postal sorting machine | John W. Sheffield, John Ivey | 2009-11-10 |