Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6093546 | Process for preparing test elements | David Ledden, Michael J. Kinch, Harvey Buck | 2000-07-25 |
| 5820826 | Casing means for analytical test apparatus | — | 1998-10-13 |
| 5356782 | Analytical test apparatus with on board negative and positive control | David Ledden, David Daniel Webster, Brian A. Heald | 1994-10-18 |