Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4328546 | Apparatus for evaluating the performance of an internal combustion engine using exhaust gas emission data | Keith Kreft, Michael F. Lynn, Jesse W. Wagoner | 1982-05-04 | $806,000 |
| 4309900 | Apparatus for measurement and display of relative compression by cylinder | Keith Kreft, Michael F. Lynn | 1982-01-12 | $1,220,000 |