Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4211630 | Electrolytic recovery of silver from photographic bleach-fix baths | Colin C. Blake | 1980-07-08 |
| 4186067 | Electrolytic recovery of silver from photographic bleach-fix baths | Colin C. Blake | 1980-01-29 |