Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4899588 | Method and apparatus for determining elastic constants in tubes | Joseph D. Titlow, David T. Hahn | 1990-02-13 |
| 4845989 | Method and apparatus for determining elastic constants in tubes | Joseph D. Titlow, David T. Hahn | 1989-07-11 |