Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6213680 | Apparatus and method for integrated pavement marking | James K. Schaeffer, Roger D. Randall, Brian D. Huffman, Jack Crosby, Paul Svaldi | 2001-04-10 |
| 5822032 | Interpupillary distance measuring device | Michael David Franz, Todd Perkins | 1998-10-13 |