Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7064819 | Versatile transmitter and receiver for position measurement | Philip Detweiler, Jonathan A Jackson, Frank Beard Douglas | 2006-06-20 |
| 6870608 | Versatile transmitter and receiver for position measurement | Philip Detweiler, Jonathon A. Jackson, Frank Beard Douglas | 2005-03-22 |
| 6643004 | Versatile transmitter and receiver for position measurement | Philip Detweiler, Nathan A. Corey, Jonathan A Jackson, Frank Beard Douglas | 2003-11-04 |