Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4421138 | Dog locking sleeve | — | 1983-12-20 |
| 4421139 | Plug for offshore platforms and the like | — | 1983-12-20 |
| 4412559 | Dog locking sleeve | Steven G. Streich, Harold O. Treece | 1983-11-01 |
| 4322181 | Conductor pipe plug and method of installing conductor pipe | Steven G. Streich | 1982-03-30 |