Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6295880 | Adjustable pipette | — | 2001-10-02 |
| 6158292 | Pipette | Robert E. Gilson | 2000-12-12 |
| 5836670 | Necktie with a flat flashlight concealed therein | — | 1998-11-17 |
| 5650124 | Adjustable pipette | — | 1997-07-22 |
| 5018394 | Continuously adjustable diluting device for mixing predetermined volumes of liquid | — | 1991-05-28 |
| 4926299 | Portable flashlight | — | 1990-05-15 |