Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6613236 | Water filter monitoring and indicating system | Ronald W. Guess, Patrick J. Glotzbach, Keith A. Snyder | 2003-09-02 |
| 6375834 | Water filter monitoring and indicating system | Ronald W. Guess, Patrick J. Gotzbach, Keith A. Snyder | 2002-04-23 |
| 4341155 | Custom label printer | Kenneth D. Relyea | 1982-07-27 |