Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421431 | Method and system for voice transmission of a binary data sequence from a piezoelectric transducer | Eric S. Ball | 2002-07-16 |
| 6393567 | Method of enabling a server to authorize access to a service from portable devices having electronic microcircuits, e.g. devices of the smart card type | — | 2002-05-21 |