Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6170619 | Manual hand brake sensor for a railroad car | Brady J. Hammond, Duane J. Sies, Gary O'Brien, Brad L. Cummins | 2001-01-09 |
| 5760313 | Force sensor with multiple piece actuation system | Ronald E. Guentner, D. Joseph Maurer | 1998-06-02 |
| 5757481 | Method for testing a turbidity sensor | Gary O'Brien | 1998-05-26 |
| 5596408 | Turbidity sensor with replaceable covers | Brad L. Cummins, Timothy K. Erickson, Gary O'Brien, Duane J. Sies | 1997-01-21 |