Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793499 | Tamper evident closure device | Werner F. Dubach | 1988-12-27 |
| 4585135 | Screw closure | — | 1986-04-29 |
| 4368828 | Sealing compositions | David N. Samuel | 1983-01-18 |
| 4360120 | Sealing compositions | David N. Samuel | 1982-11-23 |