Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5749652 | Mixing apparatus and method | William O. Gran, James P. Junk | 1998-05-12 |
| 5383163 | Mixing apparatus | — | 1995-01-17 |
| 5377376 | Mobile surface cleaning machine | David W. Wood | 1995-01-03 |
| 5261744 | Mixing apparatus | — | 1993-11-16 |
| 5239720 | Mobile surface cleaning machine | David W. Wood | 1993-08-31 |