Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5481889 | Mechanical latch system | John E. Richard, David B. Wightman, Clifford A. Klinger, Joseph D. Ricke | 1996-01-09 |
| 4917421 | Detachable fastener for electrical enclosures | David B. Wightman, Robert Knoss | 1990-04-17 |