Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4909280 | Fastener for closing and sealing ends of pipes subjected to internal pressure | Pawel Friedrich, Wieslaw Placzek, Leszek Mynarz, Krzysztof Karpinski | 1990-03-20 |
| 4838075 | Method and a fastener for closing and sealing pipes subjected to internal pressure | Pawel Friedrich, Wieslaw Placzek, Leszek Mynarz, Krzysztof Karpinski, Tadeusz Tarasiuk | 1989-06-13 |