Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681668 | Dual wall storage battery system having air passageways in the bottom of the battery | Michael E. Reed, Thomas J. Dougherty, Mark S. Inkmann, Michael T. Reher | 1997-10-28 |
| 5552642 | Protection system with voltage switching | Thomas J. Dougherty, Ann L. Roche, David A. Thuerk, David J. Novak | 1996-09-03 |
| 5543248 | Thermal stabilization shield for storage batteries | Thomas J. Dougherty, Mark S. Inkmann, Michael T. Reher | 1996-08-06 |
| 5284720 | Vent cap with electrolyte drain and explosion attenuation capabilities | David A. Thuerk, Thomas J. Dougherty, Randy K. Hulsebus | 1994-02-08 |