Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5322441 | Method and apparatus for providing a portable visual display | Steven F. Martin, Dale A. Cone, Norman A. Josephson | 1994-06-21 |
| 5294792 | Writing tip position sensing and processing apparatus | Floyd H. Hollister, Dale A. Cone | 1994-03-15 |