Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4945490 | Brinell hardness indicator with digital readout | Ernest L. Biddle, John D. Laessig | 1990-07-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4945490 | Brinell hardness indicator with digital readout | Ernest L. Biddle, John D. Laessig | 1990-07-31 |