Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9274508 | Prismatic lock and key security | William R. Duffy, III, Phillip D. Jones, David T. Windell | 2016-03-01 |
| 8917302 | Apparatus and method to display information using an information layer laminate | Michael J. Barton, William R. Duffy, III, David T. Windell | 2014-12-23 |
| 8462322 | Prismatic lock and key security | William R. Duffy, III, Phillip D. Jones, David T. Windell | 2013-06-11 |