Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6414673 | Transmitter pen location system | Robert P. Wood, Alfred Samson Hou, Serge Plotkin | 2002-07-02 |
| 6335723 | Transmitter pen location system | Robert P. Wood, Serge Plotkin, Alfred Samson Hou | 2002-01-01 |