Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1092292 | Buckle assembly | Michael A. Criswell, Monica L Russ | 2025-09-09 |
| 12171308 | Buckle assembly | Michael A. Criswell, Monica L Russ | 2024-12-24 |
| 9598093 | Signal detection system and method | Jeffrey Michael Fries, Gregory K. Hann, Aric Albert Weingartner, Dan E Erickson, David Fletcher +1 more | 2017-03-21 |
| 9391820 | Railway code generation and signaling system and method | James Kiss | 2016-07-12 |
| 9340220 | Systems and methods for management of crossings near stations | Jeffrey Michael Fries, Michael W. Steffen, II, Jesse Herlocker, Nels Jorgensen, Anuka Sawh | 2016-05-17 |
| 9208941 | Apparatus and method for safe state retention | — | 2015-12-08 |
| 8833703 | Systems and method for a crossing equipment controller | Michael W. Steffen, II, Brian Isaacson, William Shields, James Strecker | 2014-09-16 |