Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10119627 | Poppet valve | Chris des Garennes, Peter van Drumpt | 2018-11-06 |
| 9796639 | Polymer mixing technique | Chris des Garennes, Peter van Drumpt | 2017-10-24 |
| 9232780 | Apparatus for injecting soil treatments | James H. Cink, Richard A. Warriner, Ken Brown, Michael Chris desGarennes | 2016-01-12 |