Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D345964 | Computer system unit | Charles D. Hultgren, James L. Schlemmer, John Leonardo, Lindsay Gupton | 1994-04-12 |
| 4415951 | Lampchanger | Marion Recane, William V. Burns, Charles E. McMillen | 1983-11-15 |
| 4225901 | Lampchanger for a light | — | 1980-09-30 |
| 4190777 | Position sensor for rotatable lamp changer turret | William R. Klein, Richard D. Krenke | 1980-02-26 |