Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333205 | Vacuum cleaner with soil agitator and compressed air means | Marion D. Holland | 1982-06-08 |
| 4315344 | Vacuum cleaner with improved compressed air means | Marion D. Holland | 1982-02-16 |
| 4300261 | Vacuum cleaning apparatus with compressed air means | Marion D. Holland | 1981-11-17 |