Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870001 | Silver halide photographic paper having developer in the emulsion layer and a rough hydrophilic backcoating layer | — | 1989-09-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870001 | Silver halide photographic paper having developer in the emulsion layer and a rough hydrophilic backcoating layer | — | 1989-09-26 |