Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5725623 | Filter and accessory mount for upright vacuum cleaner exhaust port | Leonard E. Bowerman, Peter Hoekstra, Carla B. Rogers | 1998-03-10 |
| 5690713 | Filter and accessory mount for upright vacuum cleaner exhaust port | Leonard E. Bowerman, Peter Hoekstra, Michael John Kowalski, Carla B. Rogers | 1997-11-25 |
| 5685894 | Filter and accessory mount for upright vacuum cleaner exhaust port | Leonard E. Bowerman, Peter Hoekstra, Michael John Kowalski, Carla B. Rogers | 1997-11-11 |