Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864630 | Method and apparatus for reading data pages on a data surface | Jerome Drexler | 1989-09-05 |
| 4818852 | Method for forming data cards with registered images | Richard M. Haddock, Jerome Drexler | 1989-04-04 |