Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D836505 | Compression relief brake assembly | Richard J. Gustafson, Robert C. Ahrmann, Michael Lee Stark, II | 2018-12-25 |
| D828249 | Compression relief brake assembly | Richard J. Gustafson, Robert C. Ahrmann, Michael Lee Stark, II | 2018-09-11 |
| D828250 | Compression relief brake system | Richard J. Gustafson, Robert C. Ahrmann, Michael Lee Stark, II | 2018-09-11 |
| D813124 | Rocker for compression relief brake | Richard J. Gustafson, Robert C. Ahrmann, Michael Lee Stark, II | 2018-03-20 |