Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11266562 | Tactile tiles and installation methods | — | 2022-03-08 |
| 7674066 | Tactile tile product for the visually impaired, method of manufacture and methods of conducting business therewith | — | 2010-03-09 |
| 5203425 | Personnel lift devices | — | 1993-04-20 |
| 4715474 | Scaffold system | — | 1987-12-29 |
| 4691795 | Vehicle fluidic drive circuit | Ronald W. Barnhart | 1987-09-08 |
| 4625830 | Work platform centering apparatus | Ronald W. Barnhart, Craig Beymer | 1986-12-02 |
| 4518061 | Translating mobile work platform | Ronald W. Barnhart | 1985-05-21 |
| 4427093 | Locking device | Ronald W. Barnhart | 1984-01-24 |