Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646781 | Optical filters for forming enhanced images | — | 1997-07-08 |
| 5592859 | Tool handle for holding multiple tools of different sizes during use | Kenneth R. Johnson, Ronald L. Johnson | 1997-01-14 |