Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4647921 | Alphanumeric display | Herbert Jacoby, Joe K. Koe | 1987-03-03 | $8,666,000 |
| 4561093 | Servicing a software-controlled elevator | David L. Hardenbrook | 1985-12-24 | $10,074,000 |
| 4527662 | Elevator speed control | Clement A. Skalski | 1985-07-09 | $3,326,000 |
| 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 | $18,065,000 |