Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6802770 | Ventilating exhaust fan | David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Kevin P. Gahagan | 2004-10-12 |
| 6488579 | Ventilating exhaust fan | David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Kevin P. Gahagan | 2002-12-03 |
| 6261175 | Ventilating exhaust fan | David M. Larson, Robert G. Penlesky, Daniel L. Karst, Robert A. Chvosta, Kevin P. Gahagan | 2001-07-17 |
| 5062410 | Downdraft range ventilator | Joseph R. Sarnosky, David W. Wolbrink, Gary E. Behm | 1991-11-05 |
| 4502344 | Self-energizing friction drive transmission | — | 1985-03-05 |
| 4458737 | Wood splitter height adjusting mechanism | — | 1984-07-10 |