Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9834934 | Concealed panel clip for standing seam roof system | Clifton D. Hyder | 2017-12-05 |
| 4791770 | Subpurlin and attachment assembly | John Bell | 1988-12-20 |
| 4747249 | Subpurlin and attachment assembly | John Bell, Harold E. Martin | 1988-05-31 |
| 4676042 | Subpurlin and attachment assembly | John Bell, Harold E. Martin | 1987-06-30 |
| 4651489 | Insulated roofing structure | John Bell, Peter E. Helgesen | 1987-03-24 |