Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5799610 | Self-filtering litter box for pets | — | 1998-09-01 |
| 5279314 | Electric dental flosser | Leonard L. Hofheins, Del M. Thornock | 1994-01-18 |
| D343478 | Dental flossing tip | Leonard L. Hofheins, Del M. Thornock | 1994-01-18 |