Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626094 | Tactile last-step indicator for stair safety | Brian F. Donnelly, Robert S. Krolick | 1997-05-06 |
| D364714 | Cylindrical dipstick cleaner | — | 1995-11-28 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626094 | Tactile last-step indicator for stair safety | Brian F. Donnelly, Robert S. Krolick | 1997-05-06 |
| D364714 | Cylindrical dipstick cleaner | — | 1995-11-28 |