Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6363574 | Vacuum cleaner | Michael Worden, Curt J. Schulze, Jack P. Christen | 2002-04-02 |
| 6219880 | Vacuum cleaner | Michael Worden, Curt J. Schulze, Jack P. Christen | 2001-04-24 |
| D422386 | Vacuum cleaner | Philip Jaros, Donald W. Zurwelle, Jeffrey J. Baker, Jack P. Christen, Robert J. Eukovich +3 more | 2000-04-04 |