Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5409195 | Safety cable restraint system for railroad bridges | Kevin MacDonald, Joseph L. To | 1995-04-25 |
| 5325788 | Safety trolley restraint system for railroad bridges having pivotal clamping rollers | Kevin MacDonald | 1994-07-05 |