Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7098774 | Method and apparatus for monitoring and controlling warning systems | David Michael Davenport, Ralph Thomas Hoctor, William Thomas Hatfield, Kuna Venkat Satya Rama Kishore, Mukesh Soni | 2006-08-29 |
| 7053784 | System and method for monitoring alignment of a signal lamp | William Thomas Hatfield, Kenneth Brakeley Welles, II, Harry Kirk Mathews, Jr., Emad Andarawis Andarawis, David Michael Davenport +2 more | 2006-05-30 |