Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887695 | Position control method and apparatus for an elevator drive | — | 1989-12-19 |
| 4598354 | Data input and output device for a drive regulation apparatus operated by a digital computer | Ray Stanyard | 1986-07-01 |
| 4493398 | Drive control for a transportation system, especially an elevator | — | 1985-01-15 |
| 4337848 | Start control device, especially for an elevator | — | 1982-07-06 |