Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10464580 | Railroad tank car manway assembly | Dan Schmidt, Spencer Dale Johnson | 2019-11-05 |
| 10029705 | Railroad tank car manway assembly | Dan Schmidt, Spencer Dale Johnson | 2018-07-24 |
| 9828006 | Disengaging handle assembly for a bottom outlet valve | Nicholas Thompson | 2017-11-28 |
| 9746873 | Disengaging handle assembly for a bottom outlet valve | Nicholas Thompson, Peter J. Douglas | 2017-08-29 |
| 9714719 | Bottom outlet valve removable independent steam jacket | Peter J. Douglas, Joe Perez, Jonathan O. Schultz, Nathan Chilton, Keith Peltason | 2017-07-25 |
| 9499178 | Railroad tank car manway assembly | Peter J. Douglas | 2016-11-22 |
| 9260118 | Railroad tank car manway assembly | Peter J. Douglas | 2016-02-16 |
| 8899161 | Railroad tank car manway assembly | Peter J. Douglas | 2014-12-02 |