Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D392407 | Light fixture | Richard A. Johnson, Rupert O. Yantz, Richard C. Mayer | 1998-03-17 |
| 5357414 | Modular cantilevered electrical light fixture | Henry J. Griesmer, Catherine Alexander, Peter M. Zimmerman, Pinkston S. Harper, Steven A. Nickel +5 more | 1994-10-18 |