Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297899 | Fluid flow sensor | Peter Blaney, Willard L. Zeigner | 1981-11-03 |
| 4263812 | Flow sensor | Willard L. Zeigner | 1981-04-28 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297899 | Fluid flow sensor | Peter Blaney, Willard L. Zeigner | 1981-11-03 |
| 4263812 | Flow sensor | Willard L. Zeigner | 1981-04-28 |