Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10844574 | Mobile vacuum system | David A. Bural, Levi J. Krutzfeldt, Vernon T. Stellman | 2020-11-24 |
| D895914 | Vacuum system | B. Zac Blumer, Benjamin S. Burkhart, Levi J. Krutzfeldt, Jim L. Lee | 2020-09-08 |