Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11145921 | Vapor phase photo-electrochemical cell | Karl A. Walczak | 2021-10-12 |
| 6802770 | Ventilating exhaust fan | Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan | 2004-10-12 |
| 6488579 | Ventilating exhaust fan | Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan | 2002-12-03 |
| 6261175 | Ventilating exhaust fan | Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Alan G. Klug, Kevin P. Gahagan | 2001-07-17 |
| D284132 | Rectangular double donut | — | 1986-06-10 |