Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4687116 | Easy open container end closure | Herbert V. Dutt | 1987-08-18 |
| 4683016 | Process for forming a two part closure | Herbert V. Dutt, Istvan Foldesi | 1987-07-28 |
| 4637519 | Two part closure | Herbert V. Dutt | 1987-01-20 |
| 4552328 | Mold for making tamper-proof closure | Herbert V. Dutt | 1985-11-12 |
| 4534480 | Tamper evident closure | Herbert V. Dutt, Arno F. Pirkau | 1985-08-13 |
| 4526282 | Tamper proof closure cap, method, and tool for making same | Herbert V. Dutt | 1985-07-02 |
| 4300701 | Closure cap | — | 1981-11-17 |