Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D489351 | SOS information recording and reproducing device | Stephen Robert Heath | 2004-05-04 |
| D487898 | Sound receiving device | — | 2004-03-30 |
| D487470 | Signal receiving device | — | 2004-03-09 |
| D487276 | Sound transmitting device | — | 2004-03-02 |