Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5628581 | Sheet metal construction system | Michael D. Hintz, Laird I. Richardson | 1997-05-13 |
| 5613759 | Light and filter support structure | Richard E. Spradling, David E. Benson | 1997-03-25 |