Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8013595 | AC magnetic tracking system with phase locking | Robert F. Higgins, Henry E. Himberg | 2011-09-06 |
| 7873491 | AC magnetic tracking system with non-coherency between sources and sensors | Robert F. Higgins, Allan G. Rodgers, Jr. | 2011-01-18 |