Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7715516 | Method of delivering a tool into a submerged bore | Jack T. Matsumoto, Christopher M. Welsh, Trevor Davis | 2010-05-11 | $48,359,000 |
| 7543512 | Bore inspection probe | Christopher M. Welsh, Trevor Davis | 2009-06-09 | $78,647,000 |
| 7512207 | Apparatus for delivering a tool into a submerged bore | Jack T. Matsumoto, Christopher M. Welsh, Trevor Davis, Jeffrey J Grinnell, David P. Ketcham | 2009-03-31 | $61,912,000 |