Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5135081 | Elevator position sensing system using coded vertical tape | Willilam R. Hoelscher, John H. Parker | 1992-08-04 |
| 4951787 | Elevator control and indicator device | Larry W. Lind | 1990-08-28 |
| 4805739 | Elevator control switch and position indicator assembly | Larry W. Lind | 1989-02-21 |
| 4750592 | Elevator position reading sensor system | — | 1988-06-14 |
| 4417231 | Engine over-temperature and oil pressure loss audible warning device | — | 1983-11-22 |