Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5245868 | Piston stop for free piston shock tube/tunnel | John J. Lacey, Jr., Hallock F. Swift | 1993-09-21 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5245868 | Piston stop for free piston shock tube/tunnel | John J. Lacey, Jr., Hallock F. Swift | 1993-09-21 |