Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4243727 | Surface smoothed tool joint hardfacing | Allen E. Wisler | 1981-01-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4243727 | Surface smoothed tool joint hardfacing | Allen E. Wisler | 1981-01-06 |