Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871077 | Tamper resistant, tamper evident leak proof container | William C. Dixon | 1989-10-03 |
| 4813563 | Tamper resistant, tamper evident leak proof container | William C. Dixon | 1989-03-21 |