Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8894259 | Dark field illuminator with large working area | Carl E. Haugan, Steven K. Case, David M. Kranz, Steven A. Rose | 2014-11-25 |
| 7190393 | Camera with improved illuminator | David D. Madsen, Eric P. Rudd, Joseph L. Horijon | 2007-03-13 |
| 5679137 | Optical dirty cell sensor for an electronic air cleaner | John L. Erdman, Stephen J. Kemp, Maynard L. Thompson | 1997-10-21 |
| D340509 | Ceiling mounted electronic air cleaner enclosure | James A. Odom, Ralph E. Pasquarette | 1993-10-19 |