Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6601679 | Two-part wireless communications system for elevator hallway fixtures | David Crenella, Richard Robert Grzybowski, Jeffrey M. Izard, Robert G. Morgan, Chester J. Slabinski | 2003-08-05 |