Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6234197 | Holding tank vacuum relief | Edward McKiernan, James A. Sigler | 2001-05-22 |
| 6216284 | Low odor permeable hose | Sally A. Kline | 2001-04-17 |
| 6082979 | Air pump for vacuum toilet systems | — | 2000-07-04 |
| 6065493 | Vacuum relief valve for sewage holding tank | Edward McKiernan, James A. Sigler | 2000-05-23 |
| 5939160 | Low odor permeable hose | Sally A. Kline | 1999-08-17 |
| 5931642 | Plastic combined vacuum and holding tank | James A. Sigler, Edward McKiernan | 1999-08-03 |
| 5860799 | Pulsation damper for marine tank pumpout systems | Mark E. Scheibe, James A. Sigler | 1999-01-19 |
| 5806454 | Discharge hose adapter for boat holding tank | Edward McKiernan, James A. Sigler | 1998-09-15 |
| 5681148 | Vacuum/holding tank | James A. Sigler, Edward McKiernan | 1997-10-28 |
| 5621924 | Vacuum tank construction for a vacuum toilet assembly | James A. Sigler | 1997-04-22 |