Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7712515 | Municipal casting frame and method of manufacturing same | Leon P. Sulak, Keith A. Gee, Paul F. Harm, Jeremy I. Johnson | 2010-05-11 |
| 7341398 | Lift-assisted manhole cover | Jeremy I. Johnson, Lee M. Veldboom, Scott B. Beal, Herbert Carl Barnum, William R. Austin +4 more | 2008-03-11 |