Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D673667 | Cooling tower fan motor | Robert F. McElveen, William E. Martin, Stephen T. Evon | 2013-01-01 |
| 7463440 | System for improving performance writing streaming tapes | Hans C. Mikkelsen, Stephen H. Anderson, David W. Dorumsgaard, Glenn C. Kaiser, Haeng D. Park | 2008-12-09 |
| 6870699 | System for improving performance writing streaming tapes | Hans C. Mikkelsen, Stephen H. Anderson, David W. Dorumsgaard, Glenn C. Kaiser, Haeng D. Park | 2005-03-22 |