Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5987839 | Multi-panel activity floor with fixed hinge connections | Douglas J. Hamar, Mark Young | 1999-11-23 |
| 5121579 | Portable sectional flooring system with post support | Douglas J. Hamar, Gopal Jayaraman, Robert L. Whipple, Harold A. Evenson, Edward K. Hamar | 1992-06-16 |
| 5020286 | Portable sectional flooring system with post support | Douglas J. Hamar, Gopal Jayaraman, Robert L. Whipple, Harold A. Evensen | 1991-06-04 |