Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6854953 | Speed governor | Kenneth Roderick Stewart, Richard D. Neilson, Donald MacLeod Stewart, Gary L. Harris | 2005-02-15 |
| 6581690 | Window cutting tool for well casing | Kenneth Roderick Stewart | 2003-06-24 |
| 6527513 | Turbine for down-hole drilling | Kenneth Roderick Stewart | 2003-03-04 |