Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840281 | Tamper evident optical device and article utilizing the same | Roger W. Phillips, Vernon C. Spellman, Wayne L. Gossett, Paul G. Coombs | 1989-06-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840281 | Tamper evident optical device and article utilizing the same | Roger W. Phillips, Vernon C. Spellman, Wayne L. Gossett, Paul G. Coombs | 1989-06-20 |