Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4258786 | Safety valve operating apparatus | Glen E. Lochte | 1981-03-31 |
| 4193449 | Valve operating circuit | Glen E. Lochte | 1980-03-18 |
| 4185541 | Method and apparatus for hydraulically controlling subsea well equipment | Albert R. Tucker | 1980-01-29 |