Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6780226 | Charge stabilized electret filter media | Norman Lifshutz, Richard E. Gahan | 2004-08-24 |
| 6609274 | Refrigerator handle assembly | Jeffery C. Christensen, Robert A. Christenson | 2003-08-26 |
| 5645627 | Charge stabilized electret filter media | Norman Lifshutz, Richard E. Gahan | 1997-07-08 |