Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672214 | Concrete solar cell | John R. Arthur, Robert Kurt Graupner, Tyrus K. Monson, Ernest G. Wolff | 1997-09-30 |
| 5593744 | Hollow reinforcing members and composites containing the same | James R. Lundy, Alan K. Wallace, Chris A. Bell | 1997-01-14 |