Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826746 | Electrophotographic process for forming a visible image | Gerardus G. Draisma | 1989-05-02 |
| 4526849 | Multilayer electrophotographic amorphous silicon element for electrophotographic copying processes | Gabriel N. M. M. van der Voort | 1985-07-02 |