Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7212391 | Grounded isolation system | William J. Mayer, David Fisher | 2007-05-01 |
| 6937450 | Grounded isolation system | William J. Mayer, David Fisher, Milan Damjanovich | 2005-08-30 |
| 6764059 | Valve isolation system | Jonathan B. Johnson, Carmen F. Bucher, Dennis J. Rygiewicz | 2004-07-20 |
| 6611416 | Safety relay circuit for large power contactors | William J. Mayer, David Fisher | 2003-08-26 |
| 5689398 | Redundant control relay circuits | James P. Miller | 1997-11-18 |