Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7686538 | Portable vibratory screed with bubble vial inclination indication system | Todd J. Lutz, Richard Goldberg, Timothy J. Lickel | 2010-03-30 |
| 7172365 | Method of making and using a dynamically balanced walk behind trowel | Todd J. Lutz, Gregory Kruepke, Richard Goldberg | 2007-02-06 |
| 6974277 | Dynamically balanced walk behind trowel | Todd J. Lutz, Gregory Kruepke, Richard Goldberg | 2005-12-13 |