Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4320380 | Electronically controlled safety mechanism for highway exit ramp | Leonard A. Stein | 1982-03-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4320380 | Electronically controlled safety mechanism for highway exit ramp | Leonard A. Stein | 1982-03-16 |