Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865610 | Devices for controlling electrically operated appliances | — | 1989-09-12 |
| 4840634 | Calibration controller for controlling electrically operated machines | Thomas A. Krouskop | 1989-06-20 |