Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7777143 | Non-locking switch for filter monitoring | Michael J. Lockert, Charles Henry Berry, III | 2010-08-17 |
| 7414207 | Non-locking switch for filter monitoring | Michael J. Lockert, Charles Henry Berry, III | 2008-08-19 |