Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7549516 | Elevator door interlock | Gary W. Eisenhower, Jr., Michael Bunyer, Jeffrey S. Hall, Richard A. Bear | 2009-06-23 | $7,886,000 |
| 5821488 | Cable actuated switching mechanism with mechanical snap action capability and broken cable monitoring capability | — | 1998-10-13 | $10,022,000 |
| 5665947 | Cable actuated switching mechanism with mechanical snap action capibility and broken cable monitoring capability | — | 1997-09-09 | $23,371,000 |
| 5574265 | Switch housing including extensible external actuator and improved terminal structure | — | 1996-11-12 | $11,626,000 |
| 5473127 | Interlock mechanism for a key operated door switch | Michael J. Tresemer | 1995-12-05 | $11,048,000 |