Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5240071 | Improved valve assembly apparatus using travelling isolation pipe | David L. Farley | 1993-08-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5240071 | Improved valve assembly apparatus using travelling isolation pipe | David L. Farley | 1993-08-31 |