Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4224958 | Valve device for diverting and combining fluid flows | Ladislaus S. Lengyel | 1980-09-30 |
| 4191648 | Filtration device for filtering temperature controlled fluids | Ladislaus S. Lengyel | 1980-03-04 |