Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12297673 | Adjustable tamper-resistant locking mechanism for manhole cover | David J. Adams, Craig Culbertson | 2025-05-13 |
| 11204134 | Independent secondary indicator for vapor valve actuation | David J. Adams | 2021-12-21 |
| 10023997 | Water-based coatings for color sampling | Michael Haven | 2018-07-17 |
| 9695336 | Water-based coating for color sampling | Michael Haven | 2017-07-04 |
| 6178668 | Apparatus and method for connecting an implement to a traction vehicle | Timothy K. Radniecki | 2001-01-30 |