Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8040330 | Untethered stylus empolying multiple reference frequency communication | — | 2011-10-18 |
| 7916501 | Magnetic shield for use in a location sensing system | M. Benton Free, Bernard O. Geaghan, Albert H. Libbey, Billy L. Weaver | 2011-03-29 |