Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5388302 | Vacuum cleaner housing and airflow chamber | Ronald S. Hemmann, Paul H. Johnson | 1995-02-14 |
| 5388303 | Vacuum cleaner with extendable hose and brush disengagement | Ronald S. Hemmann, Craig A. DuBois | 1995-02-14 |
| 5331716 | Vacuum cleaner with extendable hose and brush disengagement | Ronald S. Hemmann, Craig A. DuBois | 1994-07-26 |