Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8714867 | Explosion mitigating cover | Kevin S. Vrondran, Dean W. Reynolds, Jeremy I. Johnson | 2014-05-06 |
| 8449216 | Manhole cover safety device | Kevin S. Vrondran, David E. Fuller, Dennis E. Webb, Jeremy I. Johnson | 2013-05-28 |
| 7341398 | Lift-assisted manhole cover | Jeremy I. Johnson, Lee M. Veldboom, Herbert Carl Barnum, William R. Austin, James F. Malpass +4 more | 2008-03-11 |