Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4662436 | Tool for washing over, cutting and retrieving a portion of a pipe within a well bore | Ernest P. Parra | 1987-05-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4662436 | Tool for washing over, cutting and retrieving a portion of a pipe within a well bore | Ernest P. Parra | 1987-05-05 |