Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6485269 | Detachable air compressor unit and system | Mark R. Matthew, David McCoy, Tom Graber, Richard B. Hawkes, Keith Kristiansen +3 more | 2002-11-26 |
| D452253 | Compressor | Mark R. Matthew, David McCoy, Tom Graber, Richard B. Hawkes, Keith Kristiansen +2 more | 2001-12-18 |
| D447752 | Compressor | Mark R. Matthew, David McCoy, Tom Graber, Richard B. Hawkes, Keith Kristiansen +2 more | 2001-09-11 |
| D447490 | Compressor | Mark R. Matthew, David McCoy, Tom Graber, Richard B. Hawkes, Keith Kristiansen +2 more | 2001-09-04 |
| D447151 | Compressor | Mark R. Matthew, David McCoy, Tom Graber, Richard B. Hawkes, Keith Kristiansen +2 more | 2001-08-28 |
| D446793 | Compressor | Mark R. Matthew, David McCoy, Tom Graber, Richard B. Hawkes, Keith Kristiansen +2 more | 2001-08-21 |
| D446792 | Compressor | Mark R. Matthew, David McCoy, Tom Graber, Richard B. Hawkes, Keith Kristiansen +2 more | 2001-08-21 |
| D444279 | Pressure washer cart | Keith Kristiansen, John Kiely, Ian Haldimann | 2001-06-26 |