Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9303364 | Rail cant measurement tool and method | Robert N. Madderom, Harold Thomas Ruggles, Stefan T. Pendrick | 2016-04-05 |
| 8844149 | Rail cant measurement tool and method | Robert N. Madderom, Harold Thomas Ruggles, Stefan T. Pendrick | 2014-09-30 |