Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5006766 | Window operator for manually or electrically motorized actuation of a mechanical window drive system | Ralph G. Yuhas | 1991-04-09 |
| 4934438 | Motorized window blind with manual overrride | Ralph G. Yuhas | 1990-06-19 |
| 4653228 | Window operating apparatus | Ralph G. Yuhas | 1987-03-31 |