Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9110474 | Pressure compensated flow rate controller with BTU meter | Paul Skoglund, Art Smith, Christopher J. Robson, Mark W. Kirchner | 2015-08-18 |
| 8805591 | Pressure compensated flow rate controller with BTU meter | Paul Skoglund, Art Smith, Chris Robson, Mark W. Kirchner | 2014-08-12 |
| 7128086 | Flow control valves | Mark W. Kirchner, Paul Skoglund | 2006-10-31 |
| 6932107 | Flow control valves | Mark W. Kirchner, Paul Skoglund | 2005-08-23 |