Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8282742 | Portable industrial vacuum system | Stephen B. Schoenberger | 2012-10-09 |
| D374749 | Industrial vacuum cleaner | Brian Burke, Robert L. Komassa | 1996-10-15 |
| 5399319 | Apparatus for filtering air and for creating a positive/negative pressure | Stephen B. Schoenberger | 1995-03-21 |
| 5095959 | Slide gate valve system for asbestos collection apparatus | Robert L. Komassa, Karl J. Becks | 1992-03-17 |