Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5067298 | Method for plaza deck construction | — | 1991-11-26 |
| 4747247 | Roof system | Gordon P. Petrash, David L. Roodvoets, Elizabeth Riley | 1988-05-31 |
| 4712349 | Protected membrane roof system for high traffic roof areas | Elizabeth Riley | 1987-12-15 |
| 4658554 | Protected membrane roof system for high traffic roof areas | Elizabeth Riley | 1987-04-21 |
| 4658645 | Wind velocity measuring apparatus | — | 1987-04-21 |