Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7223928 | Switch with improved protection from ice conditions | William W Riopka | 2007-05-29 |
| 6025657 | Power operator for switchgear with manual features | Steve Chung-Bun Lo, Todd W. Klippel, Douglas B. Hill | 2000-02-15 |
| D407694 | Electrical power operator for switchgear | Douglas B. Hill | 1999-04-06 |