Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7668652 | Portable vehicle navigation system | Larry Spencer, Jeffrey Alan Millington, Roger A. Stevens, Christopher Hook | 2010-02-23 |
| 7295921 | Portable vehicle navigation system | Larry Spencer, Jeffrey Alan Millington, Roger A. Stevens, Christopher J. Hook, deceased | 2007-11-13 |