Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8272418 | Apparatus, system, and method for manufacturing irregularly shaped panel filters | Larry T. Gunderson, David D. Helgeson, Amy K. Luttropp, Steven Stokstad | 2012-09-25 |
| 7601209 | Multiple flow filter with acoustic silencing | Larry T. Gunderson, Amy K. Luttropp | 2009-10-13 |