Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361034 | Portable hardness tester | Roland D. Borgersen, deceased, James G. Mullen | 1982-11-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361034 | Portable hardness tester | Roland D. Borgersen, deceased, James G. Mullen | 1982-11-30 |