Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6003383 | Vortex fluid meter incorporating a double obstacle | Barbara J. A. Zielinska | 1999-12-21 |
| 5808209 | Vortex fluid meter including a profiled pipe | Barbara J. A. Zielinska | 1998-09-15 |