Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8011098 | Wind turbine erector | Roger W. Vorhies | 2011-09-06 |
| 7425269 | Method to increase lateral oxygen transfer in waste water | — | 2008-09-16 |
| 7306722 | Apparatus to increase lateral oxygen transfer in waste water | — | 2007-12-11 |
| 6884353 | Apparatus for aeration without significant agitation to deplete and biodegrade sludge | Larry A. Messer | 2005-04-26 |
| 6461500 | Apparatus for aeration without significant agitation to deplete and biodegrade sludge | Larry A. Messer | 2002-10-08 |
| 6245237 | Method for vacuum aeration of septic tanks to provide low pressure microbubbles | Ronald S. Blough, Larry A. Messer | 2001-06-12 |
| 5951867 | Method for vacuum aeration of septic tanks to provide low pressure microbubbles | Ronald S. Blough, Larry A. Messer | 1999-09-14 |