Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7452409 | Powered air cleaning system and air cleaning method | Eric L. Ehrenberg | 2008-11-18 |
| 7056368 | Powered air cleaning system and air cleaning method | Eric L. Ehrenberg | 2006-06-06 |
| 6878189 | Air precleaner and method for separating heavier-than-air particulate debris from debris laden air | — | 2005-04-12 |
| 6425943 | POWERED LOW RESTRICTION AIR PRECLEANER DEVICE AND METHOD FOR PROVIDING A CLEAN AIR FLOW TO AN APPARATUS SUCH AS A COMBUSTION ENGINE AIR INTAKE, ENGINE COOLING SYSTEM, VENTILATION SYSTEM AND CAB AIR INTAKE SYSTEM | — | 2002-07-30 |
| 6406506 | Air cleaner | Eric L. Ehrenberg | 2002-06-18 |
| 6338745 | Air cleaner | Eric L. Ehrenberg | 2002-01-15 |
| 6319304 | Powered low restriction air precleaner device and method for providing a clean air flow to an apparatus such as a combustion engine air intake, engine cooling system, ventilation system and cab air intake system | — | 2001-11-20 |
| 5766315 | Method for centrifugally ejecting heavier-than-air particulate debris from an air stream | — | 1998-06-16 |
| 5656050 | Air precleaner for centrifugally ejecting heavier than air particulate debris from an air stream | — | 1997-08-12 |
| 5240593 | Apparatus for the purification of fluids | — | 1993-08-31 |