Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5928844 | Method of photographic processing using spray wash after bleaching | Leslie A. Heiligman, David G. Foster | 1999-07-27 |
| 5693456 | Photographic bleaching compositions and method of photographic processing using mixture of ferric complexes | David G. Foster | 1997-12-02 |
| 4227140 | Battery charger | Paul C. Nardella, Thomas A. Wrublewski, Anthony W. Gonsalves | 1980-10-07 |