Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5997164 | Dark field illuminator ringlight adaptor | Robert Betts, Brian C. Jones | 1999-12-07 |
| 5820250 | Dark field illuminator ringlight adaptor | Robert Betts, Brian C. Jones | 1998-10-13 |