Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828910 | Apparatus for monitoring gas concentrations | Patrick VanRyzin, Michael J. Palmer, William James Sheets | 2004-12-07 |
| 5341029 | Method for supervising a switch | — | 1994-08-23 |
| 4779384 | Rail grinder | John J. Shoenhair, Richard J. Gitter, Bernard C. Lancette, Winfred C. Croft | 1988-10-25 |