Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4639191 | Centrifugal fan liner and installing tool therefor | Joseph D. Hart | 1987-01-27 |
| 4513472 | Height adjustment mechanism | — | 1985-04-30 |
| 4490882 | Upright vacuum center | — | 1985-01-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4639191 | Centrifugal fan liner and installing tool therefor | Joseph D. Hart | 1987-01-27 |
| 4513472 | Height adjustment mechanism | — | 1985-04-30 |
| 4490882 | Upright vacuum center | — | 1985-01-01 |