Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8839557 | Automatic door closer | — | 2014-09-23 |
| 5664180 | Design tool for complex objects which links object structures of a design object in multiple design domains | David E. Halpert, Mario Ambrosi, Paul Ames, Vladimir Plsek, Mark W. Roth | 1997-09-02 |