Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4738901 | Method and apparatus for the prevention of unauthorized copying of documents | Paul F. Jacobs, Kenneth I. Gustafson, William Green | 1988-04-19 |
| 4678322 | Method and apparatus for the prevention of unauthorized copying of documents | Paul F. Jacobs, Kenneth I. Gustafson, William Green | 1987-07-07 |
| 4671839 | Secure identification card manufacture | Paul F. Jacobs | 1987-06-09 |
| 4442541 | Methods of and apparatus for sensing the denomination of paper currency | William E. Freudenthal, John G. Stoides | 1984-04-10 |