Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6565637 | Filter assembly for a vacuum cleaner | John J. Alberts, III, William H. Schmid | 2003-05-20 |
| 6432180 | Filter assembly for a vacuum cleaner | John J. Alberts, III, William H. Schmid | 2002-08-13 |
| 6312508 | Filter assembly for a vacuum cleaner | John J. Alberts, III, William H. Schmid | 2001-11-06 |