Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636287 | Apparatus and method for the active control of air moving device noise | Robert A. Kubli | 1997-06-03 |
| 5601410 | Fan having blades with sound reducing material attached | — | 1997-02-11 |