Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D333185 | Wand for determining drug test result | Mark Andersen, John von Buelow, Denise C. Garrison, Nelson F. Thune, Leonard Porche | 1993-02-09 |
| 5128802 | Patterned plastic optical components | — | 1992-07-07 |
| RE33826 | Microscope inspection slide | — | 1992-02-18 |
| 4997266 | Examination slide grid system | — | 1991-03-05 |
| 4937415 | Examination slide grid system | — | 1990-06-26 |
| D288484 | Tube rack | — | 1987-02-24 |
| 4637693 | Microscope inspection slide | — | 1987-01-20 |
| 4563332 | Liquid sampling apparatus with retention means | Thomas A. Safstron | 1986-01-07 |