Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6579171 | Ventilation assembly | Charles E. Schiedegger, J. Richard Logan, Barton Gentsch | 2003-06-17 |
| 6325712 | Ventilation assembly | Charles E. Schiedegger, J. Richard Logan, Barton Gentsch | 2001-12-04 |