Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D644801 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2011-09-06 |
| D640849 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2011-06-28 |
| D640024 | Vacuum cleaner | Robert L. Crevling, Jr., Craig A. Seasholtz, John Griffin | 2011-06-14 |
| D632444 | Vacuum cleaner | John Griffin, Robert L. Crevling, Jr. | 2011-02-08 |