Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7520920 | Guard columns for gas chromatographs and gas chromatograph-mass spectrometers | Mark Gregory, Garth E. Patterson, Jason Springston | 2009-04-21 |
| 7270020 | Instrument assemblies and analysis methods | Mark Gregory, Dennis Barket, Jr., John W. Grossenbacher | 2007-09-18 |