Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5392836 | Door assembly | John K. Olthafer, Mark Ungs, David Noon | 1995-02-28 |
| 5295527 | Folding door system | — | 1994-03-22 |
| 5143137 | Overlapping seal for insulated folding door | — | 1992-09-01 |
| 5025846 | High speed folding door | — | 1991-06-25 |
| 4887659 | High speed folding door | — | 1989-12-19 |
| 4805362 | Hook seal for loading dock shelter | John A. Frommelt | 1989-02-21 |