Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4503710 | Crack detection by electrical resistance | Randall G. Ivie | 1985-03-12 |
| 4394577 | Displacement measurement device and method | Marvin L. Peterson, Norman W. Hein, Jr. | 1983-07-19 |
| 4304135 | Constraint factor for structural monitoring | Marvin L. Peterson, Norman W. Hein, Jr., Steven E. Hawkins | 1981-12-08 |
| 4297885 | Acoustic emission for detection and monitoring of crack initiation and propagation in materials | Norman W. Hein, Jr. | 1981-11-03 |