Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31072 | Electrographic developing composition and process | Ravi Khanna, Stewart H. Merrill, Edmond S. Perry | 1982-11-02 |
| 4323634 | Electrographic toner and developer composition containing quaternary ammonium salt charge control agent | — | 1982-04-06 |