Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4690884 | Photographic element and method for forming transparencies | Frank E. Debruyn, Jr. | 1987-09-01 |
| 4247617 | Silver diffusion transfer film unit transparency | Frank E. Debruyn, Jr., Kenneth G. Scott | 1981-01-27 |