Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE48026 | Hydraulic switch machine for railroads | Dilson Santos Rodrigues, Rick Presley | 2020-06-02 |
| 9156479 | Hydraulic switch machine for railroads | Dilson Santos Rodrigues, Rick Presley | 2015-10-13 |
| 8857770 | Railway dark territory switch automation | David Ruskauff | 2014-10-14 |