Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666775 | Expansion joint cover | Roger W. Barr | 1997-09-16 |
| 5644879 | Seismic expansion joint cover assembly | Roger W. Barr, Howard J. Williams | 1997-07-08 |
| 5611181 | Seismic expansion joint cover | Roger W. Barr | 1997-03-18 |