Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9078571 | High sensitivity noise immune stethoscope | Keith Bridger, Arthur V. Cooke, Dennis John Kohlhafer, Joseph J. Lutian, John M. Sewell | 2015-07-14 |
| 8265291 | High sensitivity noise immune stethoscope | Keith Bridger, Arthur V. Cooke, Dennis John Kohlhafer, Joseph J. Lutian, John M. Sewell | 2012-09-11 |