Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6446871 | Method and apparatus for storing reference codes in a writing instrument and for retrieving information identifed by the reference codes | John E. Buckley, Thomas H. Peterson, Paul E. Linderson, Robert O. Southworth | 2002-09-10 |