Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6168163 | Shaft seal for mixers | John L. Thorson | 2001-01-02 |
| D374749 | Industrial vacuum cleaner | Brian Burke, Robert M. Reavis | 1996-10-15 |
| 5095959 | Slide gate valve system for asbestos collection apparatus | Karl J. Becks, Robert M. Reavis | 1992-03-17 |