Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5319475 | Tamper resisting holographic security seal | Keith A. Jones, Adam J. Silk | 1994-06-07 |
| 5310222 | Optical device | Charles E. Chatwin, Martin C. Gomme, David Ezra | 1994-05-10 |