Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5099918 | Power sources for downhole electrical heating | Jack E. Bridges | 1992-03-31 |
| 4919201 | Corrosion inhibition apparatus for downhole electrical heating | Jack E. Bridges, Thomas J. Bajzek | 1990-04-24 |