Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7413657 | Method for selective extraction | Heath Burns, Douglas M. Mittlesteadt, Martin Miller, Michael R. Spearman | 2008-08-19 |
| 6517725 | Oil dehydrator | Michael R. Spearman, John H. Burban, Majid Zia | 2003-02-11 |
| 6478953 | Oil filter and dehydrator | Michael R. Spearman, David Kolstad, John H. Burban, Craig J. Cuta, Majid Zia | 2002-11-12 |