Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4647921 | Alphanumeric display | Herbert Jacoby, Joe K. Koe | 1987-03-03 |
| 4561093 | Servicing a software-controlled elevator | David L. Hardenbrook | 1985-12-24 |
| 4527662 | Elevator speed control | Clement A. Skalski | 1985-07-09 |
| D277188 | Portable programming and testing tool | William J. Aikey | 1985-01-15 |
| 4367810 | Elevator car and door motion interlocks | J. Mark Deric, Gary K. Roberts | 1983-01-11 |