Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D319194 | Photometer | Kenneth D. Collister, John C. Coolidge, Lester W. Doyle | 1991-08-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D319194 | Photometer | Kenneth D. Collister, John C. Coolidge, Lester W. Doyle | 1991-08-20 |