Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4248521 | Electrographic recording apparatus and method | Jose L. Herrera, John D. Plumadore | 1981-02-03 |
| 4195991 | Electrographic recording method of applying an electric field opposite the charge retaining layer | L. Herrera Jose, John D. Plumadore | 1980-04-01 |