Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7726415 | Fixed cutter drill bit | Carl W. Keith, Gerald A. Strenk, Jr. | 2010-06-01 |
| 4440381 | Gate valve | — | 1984-04-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7726415 | Fixed cutter drill bit | Carl W. Keith, Gerald A. Strenk, Jr. | 2010-06-01 |
| 4440381 | Gate valve | — | 1984-04-03 |