Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6042048 | Core for winding a web of deformable material | Daniel M. Czuprynski, Zbigniew Hakiel | 2000-03-28 |
| 5857643 | Core for winding a web of deformable material | Daniel M. Czuprynski, Zbigniew Hakiel | 1999-01-12 |
| 5393589 | Apparatus and method for variably knurling edges of web and product produced thereby | John J. Zeller, Robert C. Brown, Zbigniew Hakiel, Arthur M. Stewart | 1995-02-28 |