Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4723070 | Electric heater especially for machines and tools for processing of plastics | Robert Sikora, Irena Wlodarczyk | 1988-02-02 |
| 4367985 | Method of sealing salina excavations | Andrzej Chmarzynski, Rafal Nowakowski | 1983-01-11 |