Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6119304 | Self-evacuating vacuum cleaner | Robert C. Berfield, Randy L. Buss | 2000-09-19 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6119304 | Self-evacuating vacuum cleaner | Robert C. Berfield, Randy L. Buss | 2000-09-19 |