Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D473024 | Blower | John Griffin, Robert L. Crevling, Jr. | 2003-04-08 |
| 6530116 | Vacuum cleaner with muffled detachable blower exhaust | Robert C. Berfield, Ronald Griffin | 2003-03-11 |
| D470279 | Vacuum cleaner with detachable blower | John Griffin, Robert L. Crevling, Jr. | 2003-02-11 |
| D469934 | Vacuum cleaner with detachable blower | Kevin D. Fry, John Griffin, Robert L. Crevling, Jr. | 2003-02-04 |