Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323256 | Front packer seal for ram blowout preventer | Calvin Motoda | 1982-04-06 |
| 4305595 | Composite seal | William L. Carbaugh | 1981-12-15 |
| 4294314 | Inside blowout preventer well tool | Joseph Puntar, Raymond E. Wieveg | 1981-10-13 |
| 4248264 | Internal mud saver valve | William R. Hadsell | 1981-02-03 |