Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4654977 | Electronic level | — | 1987-04-07 |
| 4516325 | Illuminated device employing printed circuit board switch | Howard Cohen | 1985-05-14 |
| 4462160 | Illuminated locking tape measure device | Howard Cohen | 1984-07-31 |