Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4746026 | Tamper-proof closure | — | 1988-05-24 |
| 4610367 | Tamper-proof closure | Philipp Massott | 1986-09-09 |
| 4592477 | Closure cap for container under pressure | Otto H. Rhein | 1986-06-03 |