Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697449 | Apparatus and method for temporary subsurface well sealing and equipment anchoring | David Glen Martin, Mark McCorry | 1997-12-16 |
| 5609178 | Pressure-actuated valve and method | Gary Pape | 1997-03-11 |