Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5177999 | Microhardness tester | Thomas P. Farrell, Sr., Giacinto Vallone | 1993-01-12 |
| 4667509 | Digital tester for measuring the hardness of the material | Ronald F. Grosso, Joseph J. Cieplak, Elliot R. Lang, Ralph Hershberger | 1987-05-26 |
| 4442705 | Clamping nosepiece for hardness tester | Elliot R. Lang | 1984-04-17 |