Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258308 | Method, kit and apparatus for verifying calibration and linearity of vertical photometers | Gary M. Freeman | 1993-11-02 |
| 5183761 | Method of making calibration solution for verifying calibration and linearity of vertical photometers | Gary M. Freeman | 1993-02-02 |