Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6089261 | Drain valve with counterweight | Todd Siverling, Paul Lee Danforth | 2000-07-18 |
| 6015494 | Polyolefin oil/water separator | Todd Siverling, William Anthony Chroninger, William Andrew Chroninger, William S. Radzinski | 2000-01-18 |